{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:Q76AR3OOSJCV3H66RYAPDYS4JJ","short_pith_number":"pith:Q76AR3OO","schema_version":"1.0","canonical_sha256":"87fc08edce92455d9fde8e00f1e25c4a5023c9e21c16d5af71cbd648319da8bc","source":{"kind":"arxiv","id":"1903.11282","version":3},"attestation_state":"computed","paper":{"title":"Quantum enhancement of sensitivity achieved by photon-number-resolving detection in the dark port of a two-path interferometer operating at high intensities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Holger F. Hofmann, Jun-Yi Wu, Norifumi Toda","submitted_at":"2019-03-27T08:11:10Z","abstract_excerpt":"It is shown that the maximal phase sensitivity of a two-path interferometer with high-intensity coherent light and squeezed vacuum in the input ports can be achieved by photon-number-resolving detection of only a small number of photons in a dark output port. It is then possible to achieve the quantum Cram\\'{e}r-Rao bound of the two-path interferometer using only the field displacement dependence of the photon number statistics in the single mode output of the dark port represented by a field-displaced squeezed vacuum state. We find that, at small field displacements, it is not sufficient to u"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1903.11282","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-03-27T08:11:10Z","cross_cats_sorted":[],"title_canon_sha256":"56eec38d938a06aeeac79e46012fcb43bd5ad2d8ad2980dbfbff144a17b76fd1","abstract_canon_sha256":"3cfb6a4615a1e2459d03558fbccb3749be8d3bde0796ada3c123887ba55738e6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:32.931504Z","signature_b64":"Ifig3kTEKVmRwfIq4NKzSCqKuCm6zBKLIbl1ILYigAvwajgpMICIyb13XoqmTZ4/hKoJ4qetzhwJCo7y3sESCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"87fc08edce92455d9fde8e00f1e25c4a5023c9e21c16d5af71cbd648319da8bc","last_reissued_at":"2026-05-17T23:40:32.931040Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:32.931040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum enhancement of sensitivity achieved by photon-number-resolving detection in the dark port of a two-path interferometer operating at high intensities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Holger F. Hofmann, Jun-Yi Wu, Norifumi Toda","submitted_at":"2019-03-27T08:11:10Z","abstract_excerpt":"It is shown that the maximal phase sensitivity of a two-path interferometer with high-intensity coherent light and squeezed vacuum in the input ports can be achieved by photon-number-resolving detection of only a small number of photons in a dark output port. It is then possible to achieve the quantum Cram\\'{e}r-Rao bound of the two-path interferometer using only the field displacement dependence of the photon number statistics in the single mode output of the dark port represented by a field-displaced squeezed vacuum state. We find that, at small field displacements, it is not sufficient to u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11282","kind":"arxiv","version":3},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1903.11282","created_at":"2026-05-17T23:40:32.931104+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.11282v3","created_at":"2026-05-17T23:40:32.931104+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.11282","created_at":"2026-05-17T23:40:32.931104+00:00"},{"alias_kind":"pith_short_12","alias_value":"Q76AR3OOSJCV","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_16","alias_value":"Q76AR3OOSJCV3H66","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_8","alias_value":"Q76AR3OO","created_at":"2026-05-18T12:33:27.125529+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ","json":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ.json","graph_json":"https://pith.science/api/pith-number/Q76AR3OOSJCV3H66RYAPDYS4JJ/graph.json","events_json":"https://pith.science/api/pith-number/Q76AR3OOSJCV3H66RYAPDYS4JJ/events.json","paper":"https://pith.science/paper/Q76AR3OO"},"agent_actions":{"view_html":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ","download_json":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ.json","view_paper":"https://pith.science/paper/Q76AR3OO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.11282&json=true","fetch_graph":"https://pith.science/api/pith-number/Q76AR3OOSJCV3H66RYAPDYS4JJ/graph.json","fetch_events":"https://pith.science/api/pith-number/Q76AR3OOSJCV3H66RYAPDYS4JJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ/action/storage_attestation","attest_author":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ/action/author_attestation","sign_citation":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ/action/citation_signature","submit_replication":"https://pith.science/pith/Q76AR3OOSJCV3H66RYAPDYS4JJ/action/replication_record"}},"created_at":"2026-05-17T23:40:32.931104+00:00","updated_at":"2026-05-17T23:40:32.931104+00:00"}