{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:5RTHNSWBR5ETLEMNI6UDTQ4BI3","short_pith_number":"pith:5RTHNSWB","canonical_record":{"source":{"id":"1606.03267","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-10T10:45:56Z","cross_cats_sorted":[],"title_canon_sha256":"59f5019229057c26178ec327760e9d5b3be81c7b5014205b98374ab6d7863b5f","abstract_canon_sha256":"84b0d8c1defb275f60fe0926f7b9449d2d4ba6a3250e3148969d36329a5bec7d"},"schema_version":"1.0"},"canonical_sha256":"ec6676cac18f4935918d47a839c38146f8546d5db2d0704561f0bee8ca4514c0","source":{"kind":"arxiv","id":"1606.03267","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03267","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03267v2","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03267","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"5RTHNSWBR5ET","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5RTHNSWBR5ETLEMN","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5RTHNSWB","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:5RTHNSWBR5ETLEMNI6UDTQ4BI3","target":"record","payload":{"canonical_record":{"source":{"id":"1606.03267","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-10T10:45:56Z","cross_cats_sorted":[],"title_canon_sha256":"59f5019229057c26178ec327760e9d5b3be81c7b5014205b98374ab6d7863b5f","abstract_canon_sha256":"84b0d8c1defb275f60fe0926f7b9449d2d4ba6a3250e3148969d36329a5bec7d"},"schema_version":"1.0"},"canonical_sha256":"ec6676cac18f4935918d47a839c38146f8546d5db2d0704561f0bee8ca4514c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:52:04.027000Z","signature_b64":"LzfHjWR9zhxjg8mGmhqqaLBx0Ctzetvxc2tWanuV7k+FopxlQ7YxUewy0vx5dHriXVZjpO1QrFnIfhevhc6MDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec6676cac18f4935918d47a839c38146f8546d5db2d0704561f0bee8ca4514c0","last_reissued_at":"2026-05-18T00:52:04.026363Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:52:04.026363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.03267","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NmAXgb/lngSV7tlRf8uHQSG4v3r965mUNbAcgWM0LwP1rLGM9WB6y1VKQuSO2TG49Dq1aGLNtq1QFWy12xkUCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:05:06.181965Z"},"content_sha256":"1497b711732a75ca6448821002e647ea64846f7d3f03547edfbaa8ee47d5c7c0","schema_version":"1.0","event_id":"sha256:1497b711732a75ca6448821002e647ea64846f7d3f03547edfbaa8ee47d5c7c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:5RTHNSWBR5ETLEMNI6UDTQ4BI3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum-enhanced microscopy with binary-outcome photon counting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"C. P. Sun, G. R. Jin, W. Yang","submitted_at":"2016-06-10T10:45:56Z","abstract_excerpt":"Polarized light microscopy using path-entangled $N$-photon states (i.e., the N00N states) has been demonstrated to surpass the shot-noise limit at very low light illumination. However, the microscopy images suffer from divergence of phase sensitivity, which inevitably reduces the image quality. Here, we show that due to experimental imperfections, such a singularity also takes place in the microscopy that uses twin-Fock states of light for illumination. We propose two schemes to completely eliminate this singularity: (i) locking the phase shift sensed by the beams at the optimal working point,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03267","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:52:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p6czb5080PBI6zDrCyUq35p7FUFkXVspXRyqr2ewqwSDndvIv//E7eV8COTULIqk0YPwK6/3n22valhjtkj6DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T20:05:06.182654Z"},"content_sha256":"e26d784353ef88e014a28effbe8d8ff725cf2133dab215c897f0b561839624fb","schema_version":"1.0","event_id":"sha256:e26d784353ef88e014a28effbe8d8ff725cf2133dab215c897f0b561839624fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/bundle.json","state_url":"https://pith.science/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-05T20:05:06Z","links":{"resolver":"https://pith.science/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3","bundle":"https://pith.science/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/bundle.json","state":"https://pith.science/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RTHNSWBR5ETLEMNI6UDTQ4BI3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5RTHNSWBR5ETLEMNI6UDTQ4BI3","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"84b0d8c1defb275f60fe0926f7b9449d2d4ba6a3250e3148969d36329a5bec7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-10T10:45:56Z","title_canon_sha256":"59f5019229057c26178ec327760e9d5b3be81c7b5014205b98374ab6d7863b5f"},"schema_version":"1.0","source":{"id":"1606.03267","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.03267","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"arxiv_version","alias_value":"1606.03267v2","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.03267","created_at":"2026-05-18T00:52:04Z"},{"alias_kind":"pith_short_12","alias_value":"5RTHNSWBR5ET","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5RTHNSWBR5ETLEMN","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5RTHNSWB","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:e26d784353ef88e014a28effbe8d8ff725cf2133dab215c897f0b561839624fb","target":"graph","created_at":"2026-05-18T00:52:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Polarized light microscopy using path-entangled $N$-photon states (i.e., the N00N states) has been demonstrated to surpass the shot-noise limit at very low light illumination. However, the microscopy images suffer from divergence of phase sensitivity, which inevitably reduces the image quality. Here, we show that due to experimental imperfections, such a singularity also takes place in the microscopy that uses twin-Fock states of light for illumination. We propose two schemes to completely eliminate this singularity: (i) locking the phase shift sensed by the beams at the optimal working point,","authors_text":"C. P. Sun, G. R. Jin, W. Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-10T10:45:56Z","title":"Quantum-enhanced microscopy with binary-outcome photon counting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03267","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1497b711732a75ca6448821002e647ea64846f7d3f03547edfbaa8ee47d5c7c0","target":"record","created_at":"2026-05-18T00:52:04Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"84b0d8c1defb275f60fe0926f7b9449d2d4ba6a3250e3148969d36329a5bec7d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-10T10:45:56Z","title_canon_sha256":"59f5019229057c26178ec327760e9d5b3be81c7b5014205b98374ab6d7863b5f"},"schema_version":"1.0","source":{"id":"1606.03267","kind":"arxiv","version":2}},"canonical_sha256":"ec6676cac18f4935918d47a839c38146f8546d5db2d0704561f0bee8ca4514c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec6676cac18f4935918d47a839c38146f8546d5db2d0704561f0bee8ca4514c0","first_computed_at":"2026-05-18T00:52:04.026363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:52:04.026363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LzfHjWR9zhxjg8mGmhqqaLBx0Ctzetvxc2tWanuV7k+FopxlQ7YxUewy0vx5dHriXVZjpO1QrFnIfhevhc6MDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:52:04.027000Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.03267","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1497b711732a75ca6448821002e647ea64846f7d3f03547edfbaa8ee47d5c7c0","sha256:e26d784353ef88e014a28effbe8d8ff725cf2133dab215c897f0b561839624fb"],"state_sha256":"a7ea6b62284aefdbf993308ba58185f82b81e8680d5fde7f9f5305e2fbcc2dc1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bincmER7KdlBAkoG8Reye2bf9B+WkYYxZb5jGk2TEgRzrgBukDmt0wQyugb6feRO6Pk1RS9tDuSgw8WzALIfAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T20:05:06.186465Z","bundle_sha256":"80af73e2716099a6a8a0e82ad3289920ca37e880b2299fdbb70c947f8ebf2f8a"}}