{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:NVA5X45UKV2BYFTZKHX34QGPEM","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":"fa5c516e460cfa7b976dc1a1ea957c6e5282878936df99f3ae5204e2a917eb77","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-30T15:14:00Z","title_canon_sha256":"1ea4b05a4fa073cad9e752f09cb3501c1763f13581a9d2ca949bd3c95d6a2430"},"schema_version":"1.0","source":{"id":"quant-ph/0304205","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0304205","created_at":"2026-07-04T14:46:10Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0304205v2","created_at":"2026-07-04T14:46:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0304205","created_at":"2026-07-04T14:46:10Z"},{"alias_kind":"pith_short_12","alias_value":"NVA5X45UKV2B","created_at":"2026-07-04T14:46:10Z"},{"alias_kind":"pith_short_16","alias_value":"NVA5X45UKV2BYFTZ","created_at":"2026-07-04T14:46:10Z"},{"alias_kind":"pith_short_8","alias_value":"NVA5X45U","created_at":"2026-07-04T14:46:10Z"}],"graph_snapshots":[{"event_id":"sha256:a026f52bedd707179fe601eed3abed32170453361100ce6fe09900e9582153d0","target":"graph","created_at":"2026-07-04T14:46:10Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/quant-ph/0304205/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate continuous variable entangling resources on the base of two-mode squeezing for all operational regimes of a nondegenerate optical parametric oscillator with allowance for quantum noise of arbitrary level. The results for the quadrature variances of a pair of generated modes are obtained by using the exact steady-state solution of Fokker-Planck equation for the complex P-quasiprobability distribution function. We find a simple expression for the squeezed variances in the near-threshold range and conclude that the maximal two-mode squeezing reaches 50% relative to the level of vac","authors_text":"G. Yu. Kryuchkyan, L. A. Manukyan","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2003-04-30T15:14:00Z","title":"Entangled light in transition through the generation threshold"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0304205","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":"sha256:9f2ea0c465b80abfa779d873149f2246af37547150c88fa554171ba817eda29c","target":"record","created_at":"2026-07-04T14:46:10Z","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":"fa5c516e460cfa7b976dc1a1ea957c6e5282878936df99f3ae5204e2a917eb77","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2003-04-30T15:14:00Z","title_canon_sha256":"1ea4b05a4fa073cad9e752f09cb3501c1763f13581a9d2ca949bd3c95d6a2430"},"schema_version":"1.0","source":{"id":"quant-ph/0304205","kind":"arxiv","version":2}},"canonical_sha256":"6d41dbf3b455741c167951efbe40cf231bf1f88efbe25689fe77650ec344f6ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d41dbf3b455741c167951efbe40cf231bf1f88efbe25689fe77650ec344f6ee","first_computed_at":"2026-07-04T14:46:10.535390Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:46:10.535390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GDRI7y66zwdJe9RcPbyF4GzIa55m1tsvj9V1KIjlOK/guIhgKVtUAmd/BVDcxzYfJZvipz0N5zoDiOAH/ninBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T14:46:10.535809Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0304205","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f2ea0c465b80abfa779d873149f2246af37547150c88fa554171ba817eda29c","sha256:a026f52bedd707179fe601eed3abed32170453361100ce6fe09900e9582153d0"],"state_sha256":"f267b5e981cc095684d6577393325ce9cb0d1aad2036f99776becf456ada33bb"}