{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:2TCBOBDM5X4LFG4CQJWHZBLY7Y","short_pith_number":"pith:2TCBOBDM","canonical_record":{"source":{"id":"1003.2581","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-12T17:03:22Z","cross_cats_sorted":[],"title_canon_sha256":"574c967cd16774c2b8ae1f4c895c1dd6279a5da5a5401193a89ce0c4dfbf7a67","abstract_canon_sha256":"12e9c6ce4fbe52ef5bce4f686dc714eb216eb2105a10f7d705d57bec499a7141"},"schema_version":"1.0"},"canonical_sha256":"d4c417046cedf8b29b82826c7c8578fe0fb86c4062d5c0a13685ce691c8a32c5","source":{"kind":"arxiv","id":"1003.2581","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.2581","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"arxiv_version","alias_value":"1003.2581v1","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.2581","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"pith_short_12","alias_value":"2TCBOBDM5X4L","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2TCBOBDM5X4LFG4C","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2TCBOBDM","created_at":"2026-05-18T12:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:2TCBOBDM5X4LFG4CQJWHZBLY7Y","target":"record","payload":{"canonical_record":{"source":{"id":"1003.2581","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-12T17:03:22Z","cross_cats_sorted":[],"title_canon_sha256":"574c967cd16774c2b8ae1f4c895c1dd6279a5da5a5401193a89ce0c4dfbf7a67","abstract_canon_sha256":"12e9c6ce4fbe52ef5bce4f686dc714eb216eb2105a10f7d705d57bec499a7141"},"schema_version":"1.0"},"canonical_sha256":"d4c417046cedf8b29b82826c7c8578fe0fb86c4062d5c0a13685ce691c8a32c5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:08:44.870886Z","signature_b64":"5mgnEwOXxqq1mnEcpKOvjU4arEGEAybsNpN2R78nZ+tb1lV3ibvmBBV9cuU1gfgxPyo/kGB66b/0LkLS+XnOAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4c417046cedf8b29b82826c7c8578fe0fb86c4062d5c0a13685ce691c8a32c5","last_reissued_at":"2026-05-18T04:08:44.870280Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:08:44.870280Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1003.2581","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:08:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IpvUTym5ZR4buOdp9vnt4g9PGgyayyTKmZ/hc30AoVLpr4oWU/g/jFbjorIbpQhoOPT6w6bUSEJPHwYzcHg/BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:00:47.752443Z"},"content_sha256":"04bc6d50da41d8a8a2ac2b3d55dec94a2a5f83e0c224cfc44a7f9ef0424d685d","schema_version":"1.0","event_id":"sha256:04bc6d50da41d8a8a2ac2b3d55dec94a2a5f83e0c224cfc44a7f9ef0424d685d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:2TCBOBDM5X4LFG4CQJWHZBLY7Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Noncritical quadrature squeezing through spontaneous polarization symmetry breaking","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Carlos Navarrete-Benlloch, Eugenio Rold\\'an, Ferran V. Garcia-Ferrer, Germ\\'an J. de Valc\\'arcel","submitted_at":"2010-03-12T17:03:22Z","abstract_excerpt":"We discuss the possibility of generating noncritical quadrature squeezing by spontaneous polarization symmetry breaking. We consider first type-II frequency-degenerate optical parametric oscillators, but discard them for a number of reasons. Then we propose a four-wave mixing cavity in which the polarization of the output mode is always linear but has an arbitrary orientation. We show that in such a cavity complete noise suppression in a quadrature of the output field occurs, irrespective of the parameter values."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.2581","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:08:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gAgkYORM8ABrTaoqlOnftG3dlh3KRJgpJ+lAMY21tYqybEUFsbzIVUpxWyOfklHtN4QccDpGeAMycXgDAqZeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:00:47.753093Z"},"content_sha256":"48b62fa08f0ad80f67df3689a8e477b8e99b71ea18a4d863756a4c0c5a05b75c","schema_version":"1.0","event_id":"sha256:48b62fa08f0ad80f67df3689a8e477b8e99b71ea18a4d863756a4c0c5a05b75c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/bundle.json","state_url":"https://pith.science/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T21:00:47Z","links":{"resolver":"https://pith.science/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y","bundle":"https://pith.science/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/bundle.json","state":"https://pith.science/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2TCBOBDM5X4LFG4CQJWHZBLY7Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:2TCBOBDM5X4LFG4CQJWHZBLY7Y","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":"12e9c6ce4fbe52ef5bce4f686dc714eb216eb2105a10f7d705d57bec499a7141","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-12T17:03:22Z","title_canon_sha256":"574c967cd16774c2b8ae1f4c895c1dd6279a5da5a5401193a89ce0c4dfbf7a67"},"schema_version":"1.0","source":{"id":"1003.2581","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.2581","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"arxiv_version","alias_value":"1003.2581v1","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.2581","created_at":"2026-05-18T04:08:44Z"},{"alias_kind":"pith_short_12","alias_value":"2TCBOBDM5X4L","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"2TCBOBDM5X4LFG4C","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"2TCBOBDM","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:48b62fa08f0ad80f67df3689a8e477b8e99b71ea18a4d863756a4c0c5a05b75c","target":"graph","created_at":"2026-05-18T04:08:44Z","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"},"paper":{"abstract_excerpt":"We discuss the possibility of generating noncritical quadrature squeezing by spontaneous polarization symmetry breaking. We consider first type-II frequency-degenerate optical parametric oscillators, but discard them for a number of reasons. Then we propose a four-wave mixing cavity in which the polarization of the output mode is always linear but has an arbitrary orientation. We show that in such a cavity complete noise suppression in a quadrature of the output field occurs, irrespective of the parameter values.","authors_text":"Carlos Navarrete-Benlloch, Eugenio Rold\\'an, Ferran V. Garcia-Ferrer, Germ\\'an J. de Valc\\'arcel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-12T17:03:22Z","title":"Noncritical quadrature squeezing through spontaneous polarization symmetry breaking"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.2581","kind":"arxiv","version":1},"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":"sha256:04bc6d50da41d8a8a2ac2b3d55dec94a2a5f83e0c224cfc44a7f9ef0424d685d","target":"record","created_at":"2026-05-18T04:08:44Z","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":"12e9c6ce4fbe52ef5bce4f686dc714eb216eb2105a10f7d705d57bec499a7141","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-12T17:03:22Z","title_canon_sha256":"574c967cd16774c2b8ae1f4c895c1dd6279a5da5a5401193a89ce0c4dfbf7a67"},"schema_version":"1.0","source":{"id":"1003.2581","kind":"arxiv","version":1}},"canonical_sha256":"d4c417046cedf8b29b82826c7c8578fe0fb86c4062d5c0a13685ce691c8a32c5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d4c417046cedf8b29b82826c7c8578fe0fb86c4062d5c0a13685ce691c8a32c5","first_computed_at":"2026-05-18T04:08:44.870280Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:44.870280Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5mgnEwOXxqq1mnEcpKOvjU4arEGEAybsNpN2R78nZ+tb1lV3ibvmBBV9cuU1gfgxPyo/kGB66b/0LkLS+XnOAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:44.870886Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.2581","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04bc6d50da41d8a8a2ac2b3d55dec94a2a5f83e0c224cfc44a7f9ef0424d685d","sha256:48b62fa08f0ad80f67df3689a8e477b8e99b71ea18a4d863756a4c0c5a05b75c"],"state_sha256":"b6ab73b55199065bc9a5c354b2c2a7d2822e981aecdce3ba9e534deb9c2d3fd2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pA8NU58vpP3k9xjUPlZbGoc2V0shv98U8M9M/RLYUQPLIyEDKR7a/KVT0uD8wyjXVeEuKaKGCCQxu+yqaRUHAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:00:47.756578Z","bundle_sha256":"e7838ba623333901b1a959006c163d2456653d7912e0484cd3a19ba799d06fd0"}}