{"as_of":"2026-08-07T10:54:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:f669e4ee8a689cf66884be39566bd496cbdcade9c11277d42599ed9060d38a1d","coverage":[{"denominator":43,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":43,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-04T06:47:42.064475Z","state":"measured"},{"denominator":44,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":44,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-07T06:34:17.273281+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-07-01T02:06:11.564222Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"arxiv_reference","source_observed_at":"2026-07-01T12:25:43.717710Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"cited_work":{"arxiv_id":"2601.04139","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"2601.04139","snapshot_observed_at":"2026-08-04T03:26:30.578377Z","title":"Oglialoro, G","venue":null,"work_id":"30b95cd0-887d-485d-a43f-26cce72ce96a","year":2026},"citing_paper":{"arxiv_id":"2606.30761","last_updated":"2026-06-29T18:01:11Z","snapshot_observed_at":"2026-07-07T00:04:34.491408Z","submitted_at":"2026-06-29T18:01:11Z","title":"Improving the loss threshold for quantum advantage in photonic sensors by complete photon counting","version":1},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-07-01T02:06:11.564222Z"},"links":{"cited_paper":"/paper/2601.04139","citing_paper":"/paper/2606.30761"},"observation_digest":"sha256:06968425bc4a3649f998cd510af6abc0b9c1af4f15bb9df929283e29148fb2e8","observation_id":"995b39ae-5096-4c96-b525-e457be87020d","resolution":{"observed_at":"2026-08-04T03:26:30.578377Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-07T06:34:17.273281+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/2601.04139/citation-record","integrity":"/paper/2601.04139/integrity","json":"/paper/2601.04139/citation-record.json","paper":"/paper/2601.04139"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.181476Z","title":"Nonlinearin- terferometers in quantum optics","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.181476Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:f65023ef3f4c8fa8f34cd78dd9db5d69d359147c5f9ee339b230056a8382bcce","observation_id":"7d4d336b-879a-4fb6-891b-a907f9e04e21","resolution":{"observed_at":"2026-08-04T06:47:38.181476Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.270367Z","title":"SU(2) and SU(1,1) interferometers","venue":null,"work_id":null,"year":1986},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.270367Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:a505b23d256b5fd38aa684d491ffe66fe98e3d9c4b1a9466525b7dab128f6388","observation_id":"5759a163-678b-4c1b-93d3-04b14f2d27e9","resolution":{"observed_at":"2026-08-04T06:47:38.270367Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.351504Z","title":"In- duced coherence and indistinguishability in optical interference","venue":null,"work_id":null,"year":1991},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.351504Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:ec947aa4ca9608007778cf73b3889f03fdd599dbc95b7fe397651680e45cfd57","observation_id":"b5071bdb-2cde-4725-86a8-86596e25c9f4","resolution":{"observed_at":"2026-08-04T06:47:38.351504Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.443222Z","title":"Quantum in- distinguishability by path identity and with undetected photons","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.443222Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:c645e6a6a92c374364ff351605d0928ee141a769f9d84be93b4e384148f2cf1a","observation_id":"b303209a-d02f-4cac-8551-b814825832f3","resolution":{"observed_at":"2026-08-04T06:47:38.443222Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.533390Z","title":"Non- linear interferometry: A new approach for imaging and sensing","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.533390Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:02ceb2f0abbd7b165d1d83179433fba9d832e3c066313f765626285de149c2a9","observation_id":"f19ba18f-65f8-47bd-9ebb-f00828db2cd2","resolution":{"observed_at":"2026-08-04T06:47:38.533390Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.609908Z","title":"Quantum imaging with undetected photons","venue":null,"work_id":null,"year":2014},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.609908Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:e22d9825c86f853637747717156b39c0ac2b73e7e1764f5aef4ede3d60b38494","observation_id":"a7c5fdfe-b6aa-49c5-885f-ea1bd9e47d01","resolution":{"observed_at":"2026-08-04T06:47:38.609908Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.689293Z","title":"Experimental quantum imaging distilla- tion with undetected light","venue":null,"work_id":null,"year":2023},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":7,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.689293Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:f843c2148255751e565a4eba754bde2e21606965510c2b2b411e2ba80927fa7d","observation_id":"d6a7c938-d51c-461e-b53e-648efa2e4b6e","resolution":{"observed_at":"2026-08-04T06:47:38.689293Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.749131Z","title":"Optical section- ing in induced coherence tomography with frequency-entangled photons","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":8,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.749131Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:89a5d53e7f86ceb6056863d61bb601780eea5d918fe8ab2bf908a43e4386ba96","observation_id":"e1038698-8c5a-405e-9af3-470deb01a836","resolution":{"observed_at":"2026-08-04T06:47:38.749131Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.807614Z","title":"Phase sensitivity of gain-unbalanced nonlinear interferometers","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":9,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.807614Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:4e61b77c200bf9aa0c663ebed8f7035cadc19f602f87015a201b6aa88e620bb4","observation_id":"40ea1529-2d72-496a-acf7-84d21fcba2b9","resolution":{"observed_at":"2026-08-04T06:47:38.807614Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.886119Z","title":"Metrological Advantages in Seeded and Lossy Nonlinear Interferome- ters","venue":null,"work_id":null,"year":2025},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":10,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.886119Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:af827a2830cbefeb6ef38c34b5e2e4211e6a1c0ca535b2720f401d64abb8acda","observation_id":"418c9c7c-80d4-4f3c-80a2-b79ed1e76f8b","resolution":{"observed_at":"2026-08-04T06:47:38.886119Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:38.989554Z","title":"The phase sensi- tivity of a fully quantum three-mode non- linear interferometer","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":11,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:38.989554Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:7b5718fc5daa0b3d4a9fa3e50e6f2883b3e5cde376215e92bdbee8ad629f9174","observation_id":"54307b36-3296-442e-8c3f-362f48a019ef","resolution":{"observed_at":"2026-08-04T06:47:38.989554Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.078918Z","title":"Engineering nonlinear optic sources of photonic entanglement","venue":null,"work_id":null,"year":2011},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.078918Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:07271e2293ceb88ef7d078adc35d94bf4a801b337a6ddb309dcd5ceed015f9c8","observation_id":"8eeae28a-7976-4dba-b7b1-578d04081c47","resolution":{"observed_at":"2026-08-04T06:47:39.078918Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.163671Z","title":"On the unitary representations ofSU(1,1)andSU(2,1)","venue":null,"work_id":null,"year":1965},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":13,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.163671Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:a64c9758200d7c7d16abf49a5ef1e53f21b00160e49e94bd58180d0adc2c02f6","observation_id":"05a3c74e-129c-4d3a-b1e7-80f45ed599ec","resolution":{"observed_at":"2026-08-04T06:47:39.163671Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.270768Z","title":"Frustrated two-photon creation via interference","venue":null,"work_id":null,"year":1994},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":14,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.270768Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:486f77a62df59dc2610768111a695e16eece23b5de7bbd876d282d5dad877034","observation_id":"79dade9a-d178-482f-85ff-7d6b6bf58a5e","resolution":{"observed_at":"2026-08-04T06:47:39.270768Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.375315Z","title":"Augmenting the sensing performance of en- tangled photon pairs through asymmetry","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":15,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.375315Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:e6a5454d938c25ba7dec0514d6338c7fce68e517ab4bde175064c6ccb76dce92","observation_id":"955e70ba-3975-41b0-8511-20b277c5f727","resolution":{"observed_at":"2026-08-04T06:47:39.375315Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.458822Z","title":"Non- linear interferometer for Fourier-transform mid-infrared gas spectroscopy using near- infrared detection","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":16,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.458822Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:287e503e732ea35f0d9973858e634baf1dfde780e9e3d171c66284a5b0c3c887","observation_id":"062f0843-4402-4153-b584-45740251001e","resolution":{"observed_at":"2026-08-04T06:47:39.458822Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.545415Z","title":"Ultra-broadband quan- tum infrared spectroscopy","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":17,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.545415Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:7ce49a1b1512f92d5e1d00c4121acaa239e6ffd21a7630f799c79b6cf76b7be1","observation_id":"8b8653d1-5ebb-4df0-bab4-815dd3f6702f","resolution":{"observed_at":"2026-08-04T06:47:39.545415Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.602911Z","title":"Microscopy with undetected photons in the mid-infrared","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":18,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.602911Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:a7639404db6630acd7974e32cb537bdf117fd71a91431b654ae7320aecb34ec2","observation_id":"59a5b3fb-7c50-4464-8ada-44092f985a08","resolution":{"observed_at":"2026-08-04T06:47:39.602911Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.669577Z","title":"Video-rate imaging with undetected photons","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":19,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.669577Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:03275b08fefd9bde23570d9dd59d0d9fe7eb8211283e062cb59e2e2a5bd05089","observation_id":"15a54fdb-7f14-4a17-8512-93c1fad68452","resolution":{"observed_at":"2026-08-04T06:47:39.669577Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.727392Z","title":"Quantum holography with unde- tected light","venue":null,"work_id":null,"year":2022},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.727392Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:f30d27e8c119397c6a00a5111a1398bf53a8e18b0fd2016a553ea348d0c62f51","observation_id":"8eaf0d2e-d334-4b6e-a108-4a9545df5eb8","resolution":{"observed_at":"2026-08-04T06:47:39.727392Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.799438Z","title":"Off-axis holographic imaging with unde- tected light","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.799438Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:09c44e29ef112954f1eacab7912e9a781b3043c0381e4dcdbca1fea11cacc5a9","observation_id":"ba224059-1453-4773-a1d4-ae5998f9078c","resolution":{"observed_at":"2026-08-04T06:47:39.799438Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.849210Z","title":"Synthetic quantum holography with undetected light","venue":null,"work_id":null,"year":2025},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":22,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.849210Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:455b8af4eae629b7a97f8dc59fe62d43de4afb269ddbbfdc05decc5dd64cb13a","observation_id":"1bcc8626-6283-404a-93b6-86d7e0295859","resolution":{"observed_at":"2026-08-04T06:47:39.849210Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.900271Z","title":"Effect of losses on the performance of an SU(1,1) interferometer","venue":null,"work_id":null,"year":2012},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":23,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.900271Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:c06dc3db728e1fa7b3e9860ef60d7b0a28e5ca2593f21146a8d20f9f249f2642","observation_id":"9d562c48-bf43-49dd-a265-c433fa2e0e00","resolution":{"observed_at":"2026-08-04T06:47:39.900271Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:39.955214Z","title":"Intramode- correlation-enhanced phase sensitivities in an SU(1,1) interferometer","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":24,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:39.955214Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:3ab7950640be89c24a20676697f316965f8cc1050463e271d968e35fea03a435","observation_id":"86cdea9c-6ada-4e8a-971c-f7abb00721fe","resolution":{"observed_at":"2026-08-04T06:47:39.955214Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.004506Z","title":"Improving the phase super-sensitivity of squeezing-assisted interferometers by squeeze factor unbalancing","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":25,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.004506Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:1a902db9024b8b0b6428cac752913a8165546d449113c2b0f47317737151eb61","observation_id":"eda3965d-07ab-48e8-b70e-70a55496cf78","resolution":{"observed_at":"2026-08-04T06:47:40.004506Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.062107Z","title":"Detection loss tolerant su- persensitive phase measurement with an SU(1,1) interferometer","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":26,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.062107Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:9f9113a455fc151344e9f76e722a60572f243b1044fb6ee20c032fcf0693bb66","observation_id":"0b83440e-05c3-4015-bd7e-e3c6fbae1ce4","resolution":{"observed_at":"2026-08-04T06:47:40.062107Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.134576Z","title":"In- duced coherence without induced emission","venue":null,"work_id":null,"year":1991},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":27,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.134576Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:30e726f2419d4fbed46225a4a3be9814c9abdb359e61ffca94b04cd7f0d6f728","observation_id":"346c2980-6e6f-4fc3-9cb5-1ac930a938fa","resolution":{"observed_at":"2026-08-04T06:47:40.134576Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.258328Z","title":"Induced coherence with and without induced emis- sion","venue":null,"work_id":null,"year":2000},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":28,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.258328Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:87184996351867a7a5308bf6855e96ba4f595aefb4c272255c73b960a370eba8","observation_id":"7e73ac9e-1365-4e01-b045-7433739277d0","resolution":{"observed_at":"2026-08-04T06:47:40.258328Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.366913Z","title":"Controlling induced coherence for quantum imaging","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":29,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.366913Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:af515b4e7da53fb806eb773137019a7055f35f81eab9ab346878a1091caa9880","observation_id":"14b706b4-7e37-4d0c-8766-77768ceca0be","resolution":{"observed_at":"2026-08-04T06:47:40.366913Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.512284Z","title":"Complementarity relationship between coherence and path distinguishabil- ity in an interferometer based on induced co- herence","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":30,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.512284Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:fc8fb3fe9c363dc5f2d6277df37eab0a3241e059bb316ce04a3e122aa732d3b6","observation_id":"83db3bba-faac-4738-9ce2-7d4ea8fc99ed","resolution":{"observed_at":"2026-08-04T06:47:40.512284Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.698844Z","title":"Optimal phase measurements with bright- and vacuum-seeded SU(1,1) interferome- ters","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":31,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.698844Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:416a4aa664142b5cf63bda643f4c69bbeb87ce4426aabe940109762e91f612aa","observation_id":"5ead26e2-936c-45c2-a82c-65a4d552b9e8","resolution":{"observed_at":"2026-08-04T06:47:40.698844Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.816432Z","title":"Phase sens- ing beyond the standard quantum limit with a variation on the SU(1,1) interferometer","venue":null,"work_id":null,"year":2017},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":32,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.816432Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:9fc56fbf2cb790125454a37b2efd68fd6288955ca874d5a81c80bee02c66b1b3","observation_id":"533736b7-4ce4-4119-b40c-146d83766252","resolution":{"observed_at":"2026-08-04T06:47:40.816432Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:40.962069Z","title":"Opti- mized phase sensing in a truncated SU(1,1) interferometer","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":33,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:40.962069Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:d09afa19408bcfdf54ef46fb6f9fff7a7547d23f954c366995e5cb615aaf32e4","observation_id":"7fc3e447-58cc-47c0-aeb5-58c02c9db19b","resolution":{"observed_at":"2026-08-04T06:47:40.962069Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.076515Z","title":"Reframing SU(1,1) inter- ferometry","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":34,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.076515Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:d4aa48192622f7c02c4f3f42b0f8437ee9d7fb4bc7c66a6136a8910b379b448a","observation_id":"c709fd46-4228-4b3f-aa47-dfb61c52a370","resolution":{"observed_at":"2026-08-04T06:47:41.076515Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.193143Z","title":"Versatile Super-Sensitive Metrology Using Induced Coherence","venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":35,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.193143Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:59a82eb1c4b2bd6bf767034634dcdcb1abddcca81bd9348217a32a9e732f1679","observation_id":"1f62d477-b000-416a-a7d6-15c7622430e6","resolution":{"observed_at":"2026-08-04T06:47:41.193143Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"2508.05320","last_updated":"2025-08-07T12:24:36Z","snapshot_observed_at":"2026-08-06T08:46:12.727788Z","submitted_at":"2025-08-07T12:24:36Z","title":"Towards integrated sensors for optimized OCT with undetected photons","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2508.05320","snapshot_observed_at":"2026-08-04T06:47:41.257058Z","title":"Towards integrated sensors for optimized OCT with undetected photons","venue":null,"work_id":null,"year":2025},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":36,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.257058Z"},"links":{"cited_paper":"/paper/2508.05320","citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:2ff916a718e511a6b750d288dcfd9201ab331d509870c6fd6ed4ac334a394f1e","observation_id":"ba864da4-ec10-45fa-8a80-43169a64608d","resolution":{"observed_at":"2026-08-04T06:47:41.257058Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.355763Z","title":"Coupling undetected sensing modes by quantum era- sure","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":37,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.355763Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:a00a5c3770770d3b55cf46775f8369d48272f7329f8ac85959981f8ae465ad26","observation_id":"717a636d-daf4-4c05-a531-4db548f93f9e","resolution":{"observed_at":"2026-08-04T06:47:41.355763Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.458319Z","title":"Generation of paired photons with controllable waveforms","venue":null,"work_id":null,"year":2005},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":38,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.458319Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:7f5c84afa0937df35c51ec4db87804ca702cbd0312ea393e0b3c03d879d46cfa","observation_id":"2e2fb372-d9da-4071-9db3-bb60b2040bbf","resolution":{"observed_at":"2026-08-04T06:47:41.458319Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.610921Z","title":"Sensitivity of phase esti- mation with an SU(1,1) interferometer be- yond the single-mode approximation","venue":null,"work_id":null,"year":2026},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":39,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.610921Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:aff6d2cff43508a22946dc45726193786b913a8d8e062d33ac4c2c51234e364c","observation_id":"8c8cd5d6-8008-405a-a0ff-fbf5d2010951","resolution":{"observed_at":"2026-08-04T06:47:41.610921Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.733640Z","title":"Optimal phase point for SU(1,1) interferometer","venue":null,"work_id":null,"year":2019},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":40,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.733640Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:d884c89c6715a17bd2d2e36ae2762cdf92d509fd1760a36d1bd477f36dc6a524","observation_id":"14fef00c-0387-4627-a02f-2d25601487ab","resolution":{"observed_at":"2026-08-04T06:47:41.733640Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.859726Z","title":"Infrared spec- troscopy with visible light","venue":null,"work_id":null,"year":2016},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":41,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.859726Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:62863dce1aabf72ecfa44a4a229cc0cbed6f34aaf5eadf02aee6e5f5b0f42f02","observation_id":"cbe822a2-dec8-4b20-961c-96d6f551d7ab","resolution":{"observed_at":"2026-08-04T06:47:41.859726Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:41.917548Z","title":"Quantum imaging beyond the standard-quantum limit and phase distilla- tion","venue":null,"work_id":null,"year":2024},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":42,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:41.917548Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:be1af973cb8fcbda25b72237486573d669036c352d695637f03b4c2ee65d7b9e","observation_id":"687a3e49-09d8-43e6-82df-3b4a813481ca","resolution":{"observed_at":"2026-08-04T06:47:41.917548Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":null,"snapshot_observed_at":"2026-08-04T06:47:42.064475Z","title":"Coherent-light-boosted, sub-shotnoise, quantum interferometry","venue":null,"work_id":null,"year":2010},"citing_paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers","version":2},"reference_index":43,"source":"pdf_text","source_observed_at":"2026-08-04T06:47:42.064475Z"},"links":{"citing_paper":"/paper/2601.04139"},"observation_digest":"sha256:3b6a36b8d889127919890a107a34b90d99341ab1706cac1de503d0dbc791e51e","observation_id":"105531b9-c7e9-473d-bf4a-40361f7690f3","resolution":{"observed_at":"2026-08-04T06:47:42.064475Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"paper":{"arxiv_id":"2601.04139","last_updated":"2026-08-03T16:25:31Z","latest_version":2,"primary_category":"quant-ph","snapshot_observed_at":"2026-08-06T23:37:32.631579Z","submitted_at":"2026-01-07T17:51:52Z","title":"Below-shot-noise capacity in phase estimation using nonlinear interferometers"},"reference_resolution":{"displayed":43,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":43,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":43},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-07T06:34:17.273281+00:00","source":"crossref"},{"observed_at":"2026-08-07T06:34:11.927384+00:00","source":"retraction_watch"}],"thesis":"As of 7 August 2026, this Paper Citation Record lists 43 of 43 outbound references and 1 inbound Pith citation observation for arXiv:2601.04139."}