{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:IG3FF6GTFL3ZJ464QV72QIG2GZ","short_pith_number":"pith:IG3FF6GT","canonical_record":{"source":{"id":"1203.1980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-09T03:20:56Z","cross_cats_sorted":[],"title_canon_sha256":"35ec11ffe0502776569ee9e5dbb799389b00b78e61c35c0d9fd2d44520c3a483","abstract_canon_sha256":"cefedee56184f762728e6e628c18415fbc8e1d7b394beaa19a5c8e39748804c7"},"schema_version":"1.0"},"canonical_sha256":"41b652f8d32af794f3dc857fa820da366467dfd3acdc08b4fd1fc871b4c02758","source":{"kind":"arxiv","id":"1203.1980","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.1980","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"arxiv_version","alias_value":"1203.1980v1","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1980","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"pith_short_12","alias_value":"IG3FF6GTFL3Z","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IG3FF6GTFL3ZJ464","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IG3FF6GT","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:IG3FF6GTFL3ZJ464QV72QIG2GZ","target":"record","payload":{"canonical_record":{"source":{"id":"1203.1980","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-09T03:20:56Z","cross_cats_sorted":[],"title_canon_sha256":"35ec11ffe0502776569ee9e5dbb799389b00b78e61c35c0d9fd2d44520c3a483","abstract_canon_sha256":"cefedee56184f762728e6e628c18415fbc8e1d7b394beaa19a5c8e39748804c7"},"schema_version":"1.0"},"canonical_sha256":"41b652f8d32af794f3dc857fa820da366467dfd3acdc08b4fd1fc871b4c02758","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:00:27.843534Z","signature_b64":"Ofw8/ZjXbd7QC6SMFUf7JocZu7ahrJYHD8DtkCKOoXpi6MYGI6e+AMjyhy8lmflsmiQrsLbMaE0SW3oEoE8kBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"41b652f8d32af794f3dc857fa820da366467dfd3acdc08b4fd1fc871b4c02758","last_reissued_at":"2026-05-18T04:00:27.842602Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:00:27.842602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.1980","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":"2026-05-18T04:00:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ev+gKJNijfbz6gGPGIKJN2dEsXFe1kULzMRmAz3DyrqTizF7fBYjUVPaAbdjB+qEETK8heeKMUcgHTNvksaMCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T20:18:06.610905Z"},"content_sha256":"3614f01cfcfb52111547f4ae4a470c95bce951a4fab72a5ea6f8e4d368bff732","schema_version":"1.0","event_id":"sha256:3614f01cfcfb52111547f4ae4a470c95bce951a4fab72a5ea6f8e4d368bff732"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:IG3FF6GTFL3ZJ464QV72QIG2GZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Asymmetric EPR entanglement in continuous variable systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hans-Albert Bachor, Jean-Francois Morizur, Jiri Janousek, Katherine Wagner, Ping Koy Lam, Seiji Armstrong","submitted_at":"2012-03-09T03:20:56Z","abstract_excerpt":"Continuous variable entanglement can be produced in nonlinear systems or via interference of squeezed states. In many of optical systems, such as parametric down conversion or interference of optical squeezed states, production of two perfectly symmetric subsystems is usually used for demonstrating the existence of entanglement. This symmetry simplifies the description of the concept of entanglement. However, asymmetry in entanglement may arise naturally in a real experiment, or be intentionally introduced in a given quantum information protocol. These asymmetries can emerge from having the ou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1980","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":"2026-05-18T04:00:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QEloeATf7g/F9P/1NOvNa+V5LrEOUGyTqD2oSn474W7/iGLhhHX0vIzBcrLFyRkF369r/07D//aMOmAAaxfzDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T20:18:06.611310Z"},"content_sha256":"a8c20379266ad5698f9bc224d29beeaf43ab980821375a2341f5bfaabb808373","schema_version":"1.0","event_id":"sha256:a8c20379266ad5698f9bc224d29beeaf43ab980821375a2341f5bfaabb808373"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/bundle.json","state_url":"https://pith.science/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/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":"2026-07-02T20:18:06Z","links":{"resolver":"https://pith.science/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ","bundle":"https://pith.science/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/bundle.json","state":"https://pith.science/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IG3FF6GTFL3ZJ464QV72QIG2GZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IG3FF6GTFL3ZJ464QV72QIG2GZ","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":"cefedee56184f762728e6e628c18415fbc8e1d7b394beaa19a5c8e39748804c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-09T03:20:56Z","title_canon_sha256":"35ec11ffe0502776569ee9e5dbb799389b00b78e61c35c0d9fd2d44520c3a483"},"schema_version":"1.0","source":{"id":"1203.1980","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.1980","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"arxiv_version","alias_value":"1203.1980v1","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1980","created_at":"2026-05-18T04:00:27Z"},{"alias_kind":"pith_short_12","alias_value":"IG3FF6GTFL3Z","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IG3FF6GTFL3ZJ464","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IG3FF6GT","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:a8c20379266ad5698f9bc224d29beeaf43ab980821375a2341f5bfaabb808373","target":"graph","created_at":"2026-05-18T04:00:27Z","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":"Continuous variable entanglement can be produced in nonlinear systems or via interference of squeezed states. In many of optical systems, such as parametric down conversion or interference of optical squeezed states, production of two perfectly symmetric subsystems is usually used for demonstrating the existence of entanglement. This symmetry simplifies the description of the concept of entanglement. However, asymmetry in entanglement may arise naturally in a real experiment, or be intentionally introduced in a given quantum information protocol. These asymmetries can emerge from having the ou","authors_text":"Hans-Albert Bachor, Jean-Francois Morizur, Jiri Janousek, Katherine Wagner, Ping Koy Lam, Seiji Armstrong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-09T03:20:56Z","title":"Asymmetric EPR entanglement in continuous variable systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1980","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":"sha256:3614f01cfcfb52111547f4ae4a470c95bce951a4fab72a5ea6f8e4d368bff732","target":"record","created_at":"2026-05-18T04:00:27Z","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":"cefedee56184f762728e6e628c18415fbc8e1d7b394beaa19a5c8e39748804c7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-09T03:20:56Z","title_canon_sha256":"35ec11ffe0502776569ee9e5dbb799389b00b78e61c35c0d9fd2d44520c3a483"},"schema_version":"1.0","source":{"id":"1203.1980","kind":"arxiv","version":1}},"canonical_sha256":"41b652f8d32af794f3dc857fa820da366467dfd3acdc08b4fd1fc871b4c02758","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41b652f8d32af794f3dc857fa820da366467dfd3acdc08b4fd1fc871b4c02758","first_computed_at":"2026-05-18T04:00:27.842602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:00:27.842602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ofw8/ZjXbd7QC6SMFUf7JocZu7ahrJYHD8DtkCKOoXpi6MYGI6e+AMjyhy8lmflsmiQrsLbMaE0SW3oEoE8kBw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:00:27.843534Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.1980","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3614f01cfcfb52111547f4ae4a470c95bce951a4fab72a5ea6f8e4d368bff732","sha256:a8c20379266ad5698f9bc224d29beeaf43ab980821375a2341f5bfaabb808373"],"state_sha256":"bd751245cb4f1a6d2f317616af6cf13727d36f4183e6088b8bea765e7fde44ef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I5R/Z3yuA1jqjr9CX3NU607M4vOU+q8IX5Z08PQRxrfOhCDt1xPpgxQXyopvl6Zp4AzaysMGRhUO+BjOQD/VAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T20:18:06.613210Z","bundle_sha256":"105f1020cea7828045e79633c5c3059f24ecf730367c6f6590f55fee40930d9e"}}