{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:ZBCA4DI3YZWFH5VXNBNLDIF57X","short_pith_number":"pith:ZBCA4DI3","schema_version":"1.0","canonical_sha256":"c8440e0d1bc66c53f6b7685ab1a0bdfdcf15df0914ad4648658fb814cf38db41","source":{"kind":"arxiv","id":"1811.02099","version":1},"attestation_state":"computed","paper":{"title":"Optimum quantum resource distribution for phase measurement and quantum information tapping in a dual-beam SU(1,1) interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jiamin Li, Liang Cui, Nan Huo, Xiaoying Li, Yuhong Liu, Z. Y. Ou","submitted_at":"2018-11-06T00:32:07Z","abstract_excerpt":"Quantum entanglement is a resource in quantum metrology that can be distributed to two orthogonal physical quantities for the enhancement of their joint measurement sensitivity, as demonstrated in quantum dense metrology. On the other hand, we can also devote all the quantum resource to phase measurement only for optimum measurement sensitivity. Here, we experimentally implement a dual-beam scheme in an SU(1,1) interferometer for the optimum phase measurement sensitivity. We demonstrate a 3.9-dB improvement in signal-to-noise ratio over the optimum classical method and this is 3-dB better than"},"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":"1811.02099","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-11-06T00:32:07Z","cross_cats_sorted":[],"title_canon_sha256":"8e1423d1acb6dca05894a261d9c2fa6ebe4f38e9478e960c20d015a7e6a1b231","abstract_canon_sha256":"20bbcad04a4a37cff435d22bee96bce7b2afdb043bb398bbd2268a48f1b96868"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:55.231446Z","signature_b64":"vmE5mtCkRVgRk5/hINMUlVL++8yTN5dQltOS/GSZAj4ZX+Ex+brFucL8cCKj6+At6tBJ11vXIFKCdvHGsStPBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c8440e0d1bc66c53f6b7685ab1a0bdfdcf15df0914ad4648658fb814cf38db41","last_reissued_at":"2026-05-17T23:48:55.230882Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:55.230882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optimum quantum resource distribution for phase measurement and quantum information tapping in a dual-beam SU(1,1) interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jiamin Li, Liang Cui, Nan Huo, Xiaoying Li, Yuhong Liu, Z. Y. Ou","submitted_at":"2018-11-06T00:32:07Z","abstract_excerpt":"Quantum entanglement is a resource in quantum metrology that can be distributed to two orthogonal physical quantities for the enhancement of their joint measurement sensitivity, as demonstrated in quantum dense metrology. On the other hand, we can also devote all the quantum resource to phase measurement only for optimum measurement sensitivity. Here, we experimentally implement a dual-beam scheme in an SU(1,1) interferometer for the optimum phase measurement sensitivity. We demonstrate a 3.9-dB improvement in signal-to-noise ratio over the optimum classical method and this is 3-dB better than"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02099","kind":"arxiv","version":1},"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":"1811.02099","created_at":"2026-05-17T23:48:55.230959+00:00"},{"alias_kind":"arxiv_version","alias_value":"1811.02099v1","created_at":"2026-05-17T23:48:55.230959+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02099","created_at":"2026-05-17T23:48:55.230959+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZBCA4DI3YZWF","created_at":"2026-05-18T12:33:04.347982+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZBCA4DI3YZWFH5VX","created_at":"2026-05-18T12:33:04.347982+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZBCA4DI3","created_at":"2026-05-18T12:33:04.347982+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/ZBCA4DI3YZWFH5VXNBNLDIF57X","json":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X.json","graph_json":"https://pith.science/api/pith-number/ZBCA4DI3YZWFH5VXNBNLDIF57X/graph.json","events_json":"https://pith.science/api/pith-number/ZBCA4DI3YZWFH5VXNBNLDIF57X/events.json","paper":"https://pith.science/paper/ZBCA4DI3"},"agent_actions":{"view_html":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X","download_json":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X.json","view_paper":"https://pith.science/paper/ZBCA4DI3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1811.02099&json=true","fetch_graph":"https://pith.science/api/pith-number/ZBCA4DI3YZWFH5VXNBNLDIF57X/graph.json","fetch_events":"https://pith.science/api/pith-number/ZBCA4DI3YZWFH5VXNBNLDIF57X/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X/action/storage_attestation","attest_author":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X/action/author_attestation","sign_citation":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X/action/citation_signature","submit_replication":"https://pith.science/pith/ZBCA4DI3YZWFH5VXNBNLDIF57X/action/replication_record"}},"created_at":"2026-05-17T23:48:55.230959+00:00","updated_at":"2026-05-17T23:48:55.230959+00:00"}