{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:YTUSZHYSKL5DE45ADDVFVOG3IF","short_pith_number":"pith:YTUSZHYS","canonical_record":{"source":{"id":"1904.03839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-08T05:00:33Z","cross_cats_sorted":[],"title_canon_sha256":"9737defcaab3cfa14ff9ae62bd7389fda2a15161467af7d3fe3524ee7b5ac4e8","abstract_canon_sha256":"0252393e3d80598acba7357b7a6a81ebfe5c9543f5a042d177d7a9396b8c65dc"},"schema_version":"1.0"},"canonical_sha256":"c4e92c9f1252fa3273a018ea5ab8db417cc8ca7f2c91148e91ec42c2737b12af","source":{"kind":"arxiv","id":"1904.03839","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.03839","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.03839v2","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.03839","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"YTUSZHYSKL5D","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YTUSZHYSKL5DE45A","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YTUSZHYS","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:YTUSZHYSKL5DE45ADDVFVOG3IF","target":"record","payload":{"canonical_record":{"source":{"id":"1904.03839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-08T05:00:33Z","cross_cats_sorted":[],"title_canon_sha256":"9737defcaab3cfa14ff9ae62bd7389fda2a15161467af7d3fe3524ee7b5ac4e8","abstract_canon_sha256":"0252393e3d80598acba7357b7a6a81ebfe5c9543f5a042d177d7a9396b8c65dc"},"schema_version":"1.0"},"canonical_sha256":"c4e92c9f1252fa3273a018ea5ab8db417cc8ca7f2c91148e91ec42c2737b12af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:19.650147Z","signature_b64":"8s8Y6ahhxm7bBDHbKKVrvEU111tD4YwjXksa1PQGx+MxHbMz5IWmxuAm+e1v6uxEwXpf8pezU4fIQkJcOkzuBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c4e92c9f1252fa3273a018ea5ab8db417cc8ca7f2c91148e91ec42c2737b12af","last_reissued_at":"2026-05-17T23:48:19.649540Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:19.649540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.03839","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AXJvrmRSWtmV1MZhkbKGg5karTS8lSY0zmWTdvMAq5N3D1KzMmoSPblEV6YqskcRKQ0XW5PqIBuDG0BvESemAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T02:11:08.761684Z"},"content_sha256":"1db851eba4f750e7a59f0afb56e555c603b85d19de567aa5ae32ba19347a4352","schema_version":"1.0","event_id":"sha256:1db851eba4f750e7a59f0afb56e555c603b85d19de567aa5ae32ba19347a4352"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:YTUSZHYSKL5DE45ADDVFVOG3IF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photon cooling by dispersive atom-field coupling with atomic postselection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Felipe Oyarce, Miguel Orszag","submitted_at":"2019-04-08T05:00:33Z","abstract_excerpt":"We propose, in a Ramsey interferometer, to cool the cavity field to its ground state, starting from a thermal distribution by a dispersive atom-field coupling followed by an atomic postselection. We also analyze the effect of the cavity and atomic losses. The proposed experiment can be realized with realistic parameters with high fidelity."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.03839","kind":"arxiv","version":2},"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":"2026-05-17T23:48:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IxzReuhM+LDJkndus1PPnjqU5JLEyzMNVWYskgFcBNiEOuk0uDpGcuSCkkkLkw7hmZ8hwsbon2VAPNMGKEDpDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T02:11:08.762016Z"},"content_sha256":"4a052200a9aab63b12938fc993081cc09b5077b1b96959817fbecb799a1835bd","schema_version":"1.0","event_id":"sha256:4a052200a9aab63b12938fc993081cc09b5077b1b96959817fbecb799a1835bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/bundle.json","state_url":"https://pith.science/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/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":"2026-06-23T02:11:08Z","links":{"resolver":"https://pith.science/pith/YTUSZHYSKL5DE45ADDVFVOG3IF","bundle":"https://pith.science/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/bundle.json","state":"https://pith.science/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YTUSZHYSKL5DE45ADDVFVOG3IF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YTUSZHYSKL5DE45ADDVFVOG3IF","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":"0252393e3d80598acba7357b7a6a81ebfe5c9543f5a042d177d7a9396b8c65dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-08T05:00:33Z","title_canon_sha256":"9737defcaab3cfa14ff9ae62bd7389fda2a15161467af7d3fe3524ee7b5ac4e8"},"schema_version":"1.0","source":{"id":"1904.03839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.03839","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"arxiv_version","alias_value":"1904.03839v2","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.03839","created_at":"2026-05-17T23:48:19Z"},{"alias_kind":"pith_short_12","alias_value":"YTUSZHYSKL5D","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"YTUSZHYSKL5DE45A","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"YTUSZHYS","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:4a052200a9aab63b12938fc993081cc09b5077b1b96959817fbecb799a1835bd","target":"graph","created_at":"2026-05-17T23:48:19Z","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 propose, in a Ramsey interferometer, to cool the cavity field to its ground state, starting from a thermal distribution by a dispersive atom-field coupling followed by an atomic postselection. We also analyze the effect of the cavity and atomic losses. The proposed experiment can be realized with realistic parameters with high fidelity.","authors_text":"Felipe Oyarce, Miguel Orszag","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-08T05:00:33Z","title":"Photon cooling by dispersive atom-field coupling with atomic postselection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.03839","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":"sha256:1db851eba4f750e7a59f0afb56e555c603b85d19de567aa5ae32ba19347a4352","target":"record","created_at":"2026-05-17T23:48:19Z","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":"0252393e3d80598acba7357b7a6a81ebfe5c9543f5a042d177d7a9396b8c65dc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-08T05:00:33Z","title_canon_sha256":"9737defcaab3cfa14ff9ae62bd7389fda2a15161467af7d3fe3524ee7b5ac4e8"},"schema_version":"1.0","source":{"id":"1904.03839","kind":"arxiv","version":2}},"canonical_sha256":"c4e92c9f1252fa3273a018ea5ab8db417cc8ca7f2c91148e91ec42c2737b12af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c4e92c9f1252fa3273a018ea5ab8db417cc8ca7f2c91148e91ec42c2737b12af","first_computed_at":"2026-05-17T23:48:19.649540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:19.649540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8s8Y6ahhxm7bBDHbKKVrvEU111tD4YwjXksa1PQGx+MxHbMz5IWmxuAm+e1v6uxEwXpf8pezU4fIQkJcOkzuBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:19.650147Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.03839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1db851eba4f750e7a59f0afb56e555c603b85d19de567aa5ae32ba19347a4352","sha256:4a052200a9aab63b12938fc993081cc09b5077b1b96959817fbecb799a1835bd"],"state_sha256":"3831396c9e8a0ef65a16827c9378eff691dc9dfc88161f760efa9d3118ff72fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PWu/nkgun75/oAekLi/gjtMv3U+jMepbe696C2H7Sfr//nnP0/9EqDdKiw33Grsgf4K73nU04lPXhK3+hjfOBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T02:11:08.763783Z","bundle_sha256":"1694b8d074caaef560cbda082a10a6863441e71695237fa1122d68b344a9c9c2"}}