{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LVHXDHDFFVP6JSFO3BCFTRVG2X","short_pith_number":"pith:LVHXDHDF","canonical_record":{"source":{"id":"2405.15704","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-24T16:50:37Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"a962be264d086614c8d0f32d8bb3e7f8b7c2e9cd64e89fd26784595108cdbe4c","abstract_canon_sha256":"317faae89f4e0aa50261088ba1df0e9858c591775966e18505b804acc4a5d0e1"},"schema_version":"1.0"},"canonical_sha256":"5d4f719c652d5fe4c8aed84459c6a6d5c392d90265aa0e86ceef96a27eaa831c","source":{"kind":"arxiv","id":"2405.15704","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.15704","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"arxiv_version","alias_value":"2405.15704v1","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.15704","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_12","alias_value":"LVHXDHDFFVP6","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_16","alias_value":"LVHXDHDFFVP6JSFO","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_8","alias_value":"LVHXDHDF","created_at":"2026-07-05T09:59:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LVHXDHDFFVP6JSFO3BCFTRVG2X","target":"record","payload":{"canonical_record":{"source":{"id":"2405.15704","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-24T16:50:37Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"a962be264d086614c8d0f32d8bb3e7f8b7c2e9cd64e89fd26784595108cdbe4c","abstract_canon_sha256":"317faae89f4e0aa50261088ba1df0e9858c591775966e18505b804acc4a5d0e1"},"schema_version":"1.0"},"canonical_sha256":"5d4f719c652d5fe4c8aed84459c6a6d5c392d90265aa0e86ceef96a27eaa831c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:59:47.182448Z","signature_b64":"aI3LiiuhLWf/b1enEKxGH6vMf6rOVMYhnZNVa6NVX5WBBYB0+pJNMV0qvLdDnA/rmIj7N3EwhzNYk9rhmFXlBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d4f719c652d5fe4c8aed84459c6a6d5c392d90265aa0e86ceef96a27eaa831c","last_reissued_at":"2026-07-05T09:59:47.182000Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:59:47.182000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.15704","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":"2026-07-05T09:59:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U0jZgIRgAjXrZsNtrJd5iFIYmzCpZA+6PIRCzV9enPo3gp5nSrhMR7QL/B8lBnBo7F9pLoijZZHhD4T+qw3+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:30:26.042244Z"},"content_sha256":"ecdb402b5015c3f54611cdb4b6c83aeab14fcf96270b85eb8c0490801fac2535","schema_version":"1.0","event_id":"sha256:ecdb402b5015c3f54611cdb4b6c83aeab14fcf96270b85eb8c0490801fac2535"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LVHXDHDFFVP6JSFO3BCFTRVG2X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum nondemolition measurement operator with spontaneous emission","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Ebubechukwu O. Ilo-Okeke, Tim Byrnes","submitted_at":"2024-05-24T16:50:37Z","abstract_excerpt":"We present a theory for quantum nondemolition (QND) measurements of an atomic ensemble in the presence of spontaneous emission. We derive the master equation that governs the evolution of the ground state of the atoms and the quantum state of light. Solving the master equation exactly without invoking the Holstein-Primakoff approximation and projecting out the quantum state of light, we derive a positive operator-valued measure that describes the QND measurement. We show that at high spontaneous emission conditions, the QND measurement has a unique dominant state to which the measurement colla"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.15704","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/2405.15704/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T09:59:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bzskLsap2bHNrwTBuN7vjDrGmTf1Ihay2yLE1wSu5Xqnv6glrc8hjzI4fUvwwB69Ow0OjnO1jySY4CslQNpRCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:30:26.042623Z"},"content_sha256":"9b725fe5599df52efcd56c841d0d9fec0d5d9b71ef2c2c7e5f41f8ebdb95d4a2","schema_version":"1.0","event_id":"sha256:9b725fe5599df52efcd56c841d0d9fec0d5d9b71ef2c2c7e5f41f8ebdb95d4a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/bundle.json","state_url":"https://pith.science/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/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":"2026-08-04T05:30:26Z","links":{"resolver":"https://pith.science/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X","bundle":"https://pith.science/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/bundle.json","state":"https://pith.science/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LVHXDHDFFVP6JSFO3BCFTRVG2X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LVHXDHDFFVP6JSFO3BCFTRVG2X","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":"317faae89f4e0aa50261088ba1df0e9858c591775966e18505b804acc4a5d0e1","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-24T16:50:37Z","title_canon_sha256":"a962be264d086614c8d0f32d8bb3e7f8b7c2e9cd64e89fd26784595108cdbe4c"},"schema_version":"1.0","source":{"id":"2405.15704","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.15704","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"arxiv_version","alias_value":"2405.15704v1","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.15704","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_12","alias_value":"LVHXDHDFFVP6","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_16","alias_value":"LVHXDHDFFVP6JSFO","created_at":"2026-07-05T09:59:47Z"},{"alias_kind":"pith_short_8","alias_value":"LVHXDHDF","created_at":"2026-07-05T09:59:47Z"}],"graph_snapshots":[{"event_id":"sha256:9b725fe5599df52efcd56c841d0d9fec0d5d9b71ef2c2c7e5f41f8ebdb95d4a2","target":"graph","created_at":"2026-07-05T09:59:47Z","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/2405.15704/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a theory for quantum nondemolition (QND) measurements of an atomic ensemble in the presence of spontaneous emission. We derive the master equation that governs the evolution of the ground state of the atoms and the quantum state of light. Solving the master equation exactly without invoking the Holstein-Primakoff approximation and projecting out the quantum state of light, we derive a positive operator-valued measure that describes the QND measurement. We show that at high spontaneous emission conditions, the QND measurement has a unique dominant state to which the measurement colla","authors_text":"Ebubechukwu O. Ilo-Okeke, Tim Byrnes","cross_cats":["physics.atom-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-24T16:50:37Z","title":"Quantum nondemolition measurement operator with spontaneous emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.15704","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:ecdb402b5015c3f54611cdb4b6c83aeab14fcf96270b85eb8c0490801fac2535","target":"record","created_at":"2026-07-05T09:59:47Z","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":"317faae89f4e0aa50261088ba1df0e9858c591775966e18505b804acc4a5d0e1","cross_cats_sorted":["physics.atom-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-05-24T16:50:37Z","title_canon_sha256":"a962be264d086614c8d0f32d8bb3e7f8b7c2e9cd64e89fd26784595108cdbe4c"},"schema_version":"1.0","source":{"id":"2405.15704","kind":"arxiv","version":1}},"canonical_sha256":"5d4f719c652d5fe4c8aed84459c6a6d5c392d90265aa0e86ceef96a27eaa831c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5d4f719c652d5fe4c8aed84459c6a6d5c392d90265aa0e86ceef96a27eaa831c","first_computed_at":"2026-07-05T09:59:47.182000Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:59:47.182000Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aI3LiiuhLWf/b1enEKxGH6vMf6rOVMYhnZNVa6NVX5WBBYB0+pJNMV0qvLdDnA/rmIj7N3EwhzNYk9rhmFXlBg==","signature_status":"signed_v1","signed_at":"2026-07-05T09:59:47.182448Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.15704","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecdb402b5015c3f54611cdb4b6c83aeab14fcf96270b85eb8c0490801fac2535","sha256:9b725fe5599df52efcd56c841d0d9fec0d5d9b71ef2c2c7e5f41f8ebdb95d4a2"],"state_sha256":"dbf65a3fdc5d2b3b9ba73ef0ba659dfb0445801683c41a500ed56c756d0a1873"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JT8GPSzbDhJRTfdJFX7LIJ9f6beekTK7b5txrlFfAb1KEfX2D7O56DrxmpD9B3U2y1yDHnOeIiwfQRpOk1utAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T05:30:26.045775Z","bundle_sha256":"e2cdae312e2131fb4fcc7d4e2ddd31714c500b434bd28a6cad496b7df83a8b65"}}