{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:SK2OO5FYYIIT2IO7ZL37JHDY25","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":"66b79fd4562eeeb092236872154347a29e30f469d75a32d768b830137db96429","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2006-12-14T20:32:50Z","title_canon_sha256":"3c83a7ff975994c1b45119767aa49672db889f16f35419f79d50bcc63174dd8d"},"schema_version":"1.0","source":{"id":"quant-ph/0612124","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0612124","created_at":"2026-07-04T17:03:38Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0612124v2","created_at":"2026-07-04T17:03:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0612124","created_at":"2026-07-04T17:03:38Z"},{"alias_kind":"pith_short_12","alias_value":"SK2OO5FYYIIT","created_at":"2026-07-04T17:03:38Z"},{"alias_kind":"pith_short_16","alias_value":"SK2OO5FYYIIT2IO7","created_at":"2026-07-04T17:03:38Z"},{"alias_kind":"pith_short_8","alias_value":"SK2OO5FY","created_at":"2026-07-04T17:03:38Z"}],"graph_snapshots":[{"event_id":"sha256:638cdec45f8758031ea10130d3c7aa87d47181431155c17e6f79185344d654b0","target":"graph","created_at":"2026-07-04T17:03:38Z","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/0612124/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a compact high-intensity room-temperature source of entangled photons based on the efficient second-order process of two-photon spontaneous emission from electrically-pumped semiconductor quantum wells in a photonic microcavity. Two-photon emission rate in room-temperature semiconductor devices is determined solely by the carrier density, regardless of the residual one-photon emission. The microcavity selects two-photon emission for a specific signal and idler wavelengths and at a preferred direction without modifying the overall rate. Pair-generation rate in GaAs/AlGaAs quantum wel","authors_text":"Alex Hayat, Meir Orenstein, Pavel Ginzburg","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2006-12-14T20:32:50Z","title":"High-Rate Entanglement Source via Two-Photon Emission from Semiconductor Quantum Wells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0612124","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:abb7fccb5431fceb393bf2bee2d41b843a8c88c69d421cd31bc0d5ade98ff14a","target":"record","created_at":"2026-07-04T17:03:38Z","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":"66b79fd4562eeeb092236872154347a29e30f469d75a32d768b830137db96429","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2006-12-14T20:32:50Z","title_canon_sha256":"3c83a7ff975994c1b45119767aa49672db889f16f35419f79d50bcc63174dd8d"},"schema_version":"1.0","source":{"id":"quant-ph/0612124","kind":"arxiv","version":2}},"canonical_sha256":"92b4e774b8c2113d21dfcaf7f49c78d77f6b288a76b282b1926519753c32b51c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92b4e774b8c2113d21dfcaf7f49c78d77f6b288a76b282b1926519753c32b51c","first_computed_at":"2026-07-04T17:03:38.183333Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:03:38.183333Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6ZaST4gynA53Ld5W9g0/3smGGaSvSy0CrgJfWxVJL/k6/bp4vcfmux+iQL6aQ2KHar4g/eF3Y7a64oIHDl6VCA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:03:38.183690Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0612124","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abb7fccb5431fceb393bf2bee2d41b843a8c88c69d421cd31bc0d5ade98ff14a","sha256:638cdec45f8758031ea10130d3c7aa87d47181431155c17e6f79185344d654b0"],"state_sha256":"b1304ce8e49085c63c5c60d03e966e7c5359307de338a7e78c4a031f416efd50"}