{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:FFR2RLFYB7HBE7BYMPYWBIUT44","short_pith_number":"pith:FFR2RLFY","schema_version":"1.0","canonical_sha256":"2963a8acb80fce127c3863f160a293e726944c32f7afe861aaedc01c84ade1b9","source":{"kind":"arxiv","id":"2503.19084","version":1},"attestation_state":"computed","paper":{"title":"Study of the EPR-type entanglement characteristics of a NDPA with time-delayed coherent feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Nikolett N\\'emet, Scott Parkins, Tam\\'as Kiss","submitted_at":"2025-03-24T19:14:26Z","abstract_excerpt":"An open non-degenerate parametric oscillator (NDPO) is studied below threshold in the undepleted pump regime with time-delayed coherent feedback (TDCF). The figure of merit is the two-mode squeezing spectrum measuring the strength of continuous-valued Einstein-Podolsky-Rosen-type (EPR-type) entanglement between the down-converted modes in the output field. Exploring different areas of the parameter space reveals the possibility of significantly enhanced entanglement with tunable characteristic frequency. These resonance-like features are closely related to the unique dynamics emerging as a res"},"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":"2503.19084","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-03-24T19:14:26Z","cross_cats_sorted":[],"title_canon_sha256":"265af37c8be529547db0685ed060e812d7e81d26e88ef95340b90548a761b0e5","abstract_canon_sha256":"69fd754dd93488c711a79c14c720ea7fb86bf1a6135dff384fb363132a143ef2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:38:49.240511Z","signature_b64":"uPnxUV/AJxkMaCCslr4bZzBM5Dip+UPCCCSaeRFm7IGWYbJ+g8II/SQolp4tn+GcymyMB08s2dFK2b6BvEjcDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2963a8acb80fce127c3863f160a293e726944c32f7afe861aaedc01c84ade1b9","last_reissued_at":"2026-07-05T10:38:49.240119Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:38:49.240119Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Study of the EPR-type entanglement characteristics of a NDPA with time-delayed coherent feedback","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Nikolett N\\'emet, Scott Parkins, Tam\\'as Kiss","submitted_at":"2025-03-24T19:14:26Z","abstract_excerpt":"An open non-degenerate parametric oscillator (NDPO) is studied below threshold in the undepleted pump regime with time-delayed coherent feedback (TDCF). The figure of merit is the two-mode squeezing spectrum measuring the strength of continuous-valued Einstein-Podolsky-Rosen-type (EPR-type) entanglement between the down-converted modes in the output field. Exploring different areas of the parameter space reveals the possibility of significantly enhanced entanglement with tunable characteristic frequency. These resonance-like features are closely related to the unique dynamics emerging as a res"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.19084","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/2503.19084/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":"2503.19084","created_at":"2026-07-05T10:38:49.240174+00:00"},{"alias_kind":"arxiv_version","alias_value":"2503.19084v1","created_at":"2026-07-05T10:38:49.240174+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.19084","created_at":"2026-07-05T10:38:49.240174+00:00"},{"alias_kind":"pith_short_12","alias_value":"FFR2RLFYB7HB","created_at":"2026-07-05T10:38:49.240174+00:00"},{"alias_kind":"pith_short_16","alias_value":"FFR2RLFYB7HBE7BY","created_at":"2026-07-05T10:38:49.240174+00:00"},{"alias_kind":"pith_short_8","alias_value":"FFR2RLFY","created_at":"2026-07-05T10:38:49.240174+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/FFR2RLFYB7HBE7BYMPYWBIUT44","json":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44.json","graph_json":"https://pith.science/api/pith-number/FFR2RLFYB7HBE7BYMPYWBIUT44/graph.json","events_json":"https://pith.science/api/pith-number/FFR2RLFYB7HBE7BYMPYWBIUT44/events.json","paper":"https://pith.science/paper/FFR2RLFY"},"agent_actions":{"view_html":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44","download_json":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44.json","view_paper":"https://pith.science/paper/FFR2RLFY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2503.19084&json=true","fetch_graph":"https://pith.science/api/pith-number/FFR2RLFYB7HBE7BYMPYWBIUT44/graph.json","fetch_events":"https://pith.science/api/pith-number/FFR2RLFYB7HBE7BYMPYWBIUT44/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44/action/storage_attestation","attest_author":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44/action/author_attestation","sign_citation":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44/action/citation_signature","submit_replication":"https://pith.science/pith/FFR2RLFYB7HBE7BYMPYWBIUT44/action/replication_record"}},"created_at":"2026-07-05T10:38:49.240174+00:00","updated_at":"2026-07-05T10:38:49.240174+00:00"}