{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:C4FLIQV4EXKQJQKA5K2OIPKIDK","short_pith_number":"pith:C4FLIQV4","schema_version":"1.0","canonical_sha256":"170ab442bc25d504c140eab4e43d481aa7bac04750bd62c909cba8ca10e5f282","source":{"kind":"arxiv","id":"1909.03603","version":1},"attestation_state":"computed","paper":{"title":"Broadband Quantum Noise Reduction in Future Long Baseline Gravitational-wave Detectors via EPR Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Haixing Miao, Jacob L. Beckey, Vincent Boyer, Yiqiu Ma","submitted_at":"2019-09-09T02:57:33Z","abstract_excerpt":"Broadband quantum noise reduction can be achieved in gravitational wave detectors by injecting frequency dependent squeezed light into the the dark port of the interferometer. This frequency dependent squeezing can be generated by combining squeezed light with external filter cavities. However, in future long baseline interferometers (LBIs), the filter cavity required to achieve the broadband squeezing has a low bandwidth -- necessitating a very long cavity to mitigate the issue from optical loss. It has been shown recently that by taking advantage of Einstein-Podolsky-Rosen (EPR) entanglement"},"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":"1909.03603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-09T02:57:33Z","cross_cats_sorted":[],"title_canon_sha256":"5602148a1c972c3f3f8524697f6c33b9cb9ad193e66eae4922d1a3c83fffd82f","abstract_canon_sha256":"7cd3882c68419a4413040b3f8dc1a5232b9a4eb65742992660f7119222dcb78f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:14:15.315276Z","signature_b64":"EsjTaLH/QzDNj7gGhiKbB+eTqfNIvTlp1DScEKhAmM4UlsbWJLF48y8hEFPacCXYdqElSZwjkrqeJsHRZrHPCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"170ab442bc25d504c140eab4e43d481aa7bac04750bd62c909cba8ca10e5f282","last_reissued_at":"2026-07-05T00:14:15.314859Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:14:15.314859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Broadband Quantum Noise Reduction in Future Long Baseline Gravitational-wave Detectors via EPR Entanglement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Haixing Miao, Jacob L. Beckey, Vincent Boyer, Yiqiu Ma","submitted_at":"2019-09-09T02:57:33Z","abstract_excerpt":"Broadband quantum noise reduction can be achieved in gravitational wave detectors by injecting frequency dependent squeezed light into the the dark port of the interferometer. This frequency dependent squeezing can be generated by combining squeezed light with external filter cavities. However, in future long baseline interferometers (LBIs), the filter cavity required to achieve the broadband squeezing has a low bandwidth -- necessitating a very long cavity to mitigate the issue from optical loss. It has been shown recently that by taking advantage of Einstein-Podolsky-Rosen (EPR) entanglement"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.03603","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1909.03603/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"1909.03603","created_at":"2026-07-05T00:14:15.314920+00:00"},{"alias_kind":"arxiv_version","alias_value":"1909.03603v1","created_at":"2026-07-05T00:14:15.314920+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.03603","created_at":"2026-07-05T00:14:15.314920+00:00"},{"alias_kind":"pith_short_12","alias_value":"C4FLIQV4EXKQ","created_at":"2026-07-05T00:14:15.314920+00:00"},{"alias_kind":"pith_short_16","alias_value":"C4FLIQV4EXKQJQKA","created_at":"2026-07-05T00:14:15.314920+00:00"},{"alias_kind":"pith_short_8","alias_value":"C4FLIQV4","created_at":"2026-07-05T00:14:15.314920+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/C4FLIQV4EXKQJQKA5K2OIPKIDK","json":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK.json","graph_json":"https://pith.science/api/pith-number/C4FLIQV4EXKQJQKA5K2OIPKIDK/graph.json","events_json":"https://pith.science/api/pith-number/C4FLIQV4EXKQJQKA5K2OIPKIDK/events.json","paper":"https://pith.science/paper/C4FLIQV4"},"agent_actions":{"view_html":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK","download_json":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK.json","view_paper":"https://pith.science/paper/C4FLIQV4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1909.03603&json=true","fetch_graph":"https://pith.science/api/pith-number/C4FLIQV4EXKQJQKA5K2OIPKIDK/graph.json","fetch_events":"https://pith.science/api/pith-number/C4FLIQV4EXKQJQKA5K2OIPKIDK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK/action/storage_attestation","attest_author":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK/action/author_attestation","sign_citation":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK/action/citation_signature","submit_replication":"https://pith.science/pith/C4FLIQV4EXKQJQKA5K2OIPKIDK/action/replication_record"}},"created_at":"2026-07-05T00:14:15.314920+00:00","updated_at":"2026-07-05T00:14:15.314920+00:00"}