{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DLSLS4QPIRJJYVMVRUAGTJ32PJ","short_pith_number":"pith:DLSLS4QP","canonical_record":{"source":{"id":"1809.07777","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-09-20T18:00:04Z","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"title_canon_sha256":"6243230de259b2488b558d70bc2fb9b0cc6287a04ae861a61abaa8483059c210","abstract_canon_sha256":"09e46233318857f3ac8511ab5cca4a9da43d7966cdad2ff23274324b9bbab41c"},"schema_version":"1.0"},"canonical_sha256":"1ae4b9720f44529c55958d0069a77a7a6311d3cc5d9d0616f01d9ba82a3e5c7d","source":{"kind":"arxiv","id":"1809.07777","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.07777","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1809.07777v1","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07777","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"DLSLS4QPIRJJ","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DLSLS4QPIRJJYVMV","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DLSLS4QP","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DLSLS4QPIRJJYVMVRUAGTJ32PJ","target":"record","payload":{"canonical_record":{"source":{"id":"1809.07777","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-09-20T18:00:04Z","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"title_canon_sha256":"6243230de259b2488b558d70bc2fb9b0cc6287a04ae861a61abaa8483059c210","abstract_canon_sha256":"09e46233318857f3ac8511ab5cca4a9da43d7966cdad2ff23274324b9bbab41c"},"schema_version":"1.0"},"canonical_sha256":"1ae4b9720f44529c55958d0069a77a7a6311d3cc5d9d0616f01d9ba82a3e5c7d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:12.405727Z","signature_b64":"VCpvz5xYVtJloK23UP9FeWcky8WUpy4WNVftYhmHEoqL6b+GJOAh5Phn7+GS8ZMq9ki6e+veR9dW28u9+9zxCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1ae4b9720f44529c55958d0069a77a7a6311d3cc5d9d0616f01d9ba82a3e5c7d","last_reissued_at":"2026-05-17T23:50:12.405164Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:12.405164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.07777","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":"2026-05-17T23:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fZlC09mlqt9YEqD/qyhtnpaA6lGk/AOOzPDClNWxcZBPfLM6PXPMdCP2bwRF7x8uxkVbDde8Ma1DzDTbwL08BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:15:03.927402Z"},"content_sha256":"c032f8d4342c92fc5c4c84e6a0ba8feedacd72443f094d47195f67e9befe7502","schema_version":"1.0","event_id":"sha256:c032f8d4342c92fc5c4c84e6a0ba8feedacd72443f094d47195f67e9befe7502"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DLSLS4QPIRJJYVMVRUAGTJ32PJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bose Condensation of Photons Thermalized via Laser Cooling of Atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Chiao-Hsuan Wang, Jacob M. Taylor, J. V. Porto, M. J. Gullans, William D. Phillips","submitted_at":"2018-09-20T18:00:04Z","abstract_excerpt":"A Bose-Einstein condensate (BEC) is a quantum phase of matter achieved at low temperatures. Photons, one of the most prominent species of bosons, do not typically condense due to the lack of a particle number-conservation. We recently described a photon thermalization mechanism which gives rise to a grand canonical ensemble of light with effective photon number conservation between a subsystem and a particle reservoir. This mechanism occurs during Doppler laser cooling of atoms where the atoms serve as a temperature reservoir while the cooling laser photons serve as a particle reservoir. Here "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07777","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":"2026-05-17T23:50:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IENyjF/QlFvjZFoi1H5Fe7SgSE5pJBMeakvx+j1ZSDAOlzBwrLuiYLPteqK/+5Z/x5zXXBbTNmERqHBotlNcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:15:03.928064Z"},"content_sha256":"ede63bd25a5e9768efe72290440ec34d79bc1a548ecefa6980702d10a23e43ee","schema_version":"1.0","event_id":"sha256:ede63bd25a5e9768efe72290440ec34d79bc1a548ecefa6980702d10a23e43ee"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/bundle.json","state_url":"https://pith.science/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/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":"2026-05-30T07:15:03Z","links":{"resolver":"https://pith.science/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ","bundle":"https://pith.science/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/bundle.json","state":"https://pith.science/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DLSLS4QPIRJJYVMVRUAGTJ32PJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DLSLS4QPIRJJYVMVRUAGTJ32PJ","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":"09e46233318857f3ac8511ab5cca4a9da43d7966cdad2ff23274324b9bbab41c","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-09-20T18:00:04Z","title_canon_sha256":"6243230de259b2488b558d70bc2fb9b0cc6287a04ae861a61abaa8483059c210"},"schema_version":"1.0","source":{"id":"1809.07777","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.07777","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1809.07777v1","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07777","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"DLSLS4QPIRJJ","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DLSLS4QPIRJJYVMV","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DLSLS4QP","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:ede63bd25a5e9768efe72290440ec34d79bc1a548ecefa6980702d10a23e43ee","target":"graph","created_at":"2026-05-17T23:50:12Z","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":"A Bose-Einstein condensate (BEC) is a quantum phase of matter achieved at low temperatures. Photons, one of the most prominent species of bosons, do not typically condense due to the lack of a particle number-conservation. We recently described a photon thermalization mechanism which gives rise to a grand canonical ensemble of light with effective photon number conservation between a subsystem and a particle reservoir. This mechanism occurs during Doppler laser cooling of atoms where the atoms serve as a temperature reservoir while the cooling laser photons serve as a particle reservoir. Here ","authors_text":"Chiao-Hsuan Wang, Jacob M. Taylor, J. V. Porto, M. J. Gullans, William D. Phillips","cross_cats":["cond-mat.quant-gas","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-09-20T18:00:04Z","title":"Bose Condensation of Photons Thermalized via Laser Cooling of Atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07777","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:c032f8d4342c92fc5c4c84e6a0ba8feedacd72443f094d47195f67e9befe7502","target":"record","created_at":"2026-05-17T23:50:12Z","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":"09e46233318857f3ac8511ab5cca4a9da43d7966cdad2ff23274324b9bbab41c","cross_cats_sorted":["cond-mat.quant-gas","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-09-20T18:00:04Z","title_canon_sha256":"6243230de259b2488b558d70bc2fb9b0cc6287a04ae861a61abaa8483059c210"},"schema_version":"1.0","source":{"id":"1809.07777","kind":"arxiv","version":1}},"canonical_sha256":"1ae4b9720f44529c55958d0069a77a7a6311d3cc5d9d0616f01d9ba82a3e5c7d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1ae4b9720f44529c55958d0069a77a7a6311d3cc5d9d0616f01d9ba82a3e5c7d","first_computed_at":"2026-05-17T23:50:12.405164Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:12.405164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VCpvz5xYVtJloK23UP9FeWcky8WUpy4WNVftYhmHEoqL6b+GJOAh5Phn7+GS8ZMq9ki6e+veR9dW28u9+9zxCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:12.405727Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.07777","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c032f8d4342c92fc5c4c84e6a0ba8feedacd72443f094d47195f67e9befe7502","sha256:ede63bd25a5e9768efe72290440ec34d79bc1a548ecefa6980702d10a23e43ee"],"state_sha256":"3f6fa48755f3baa4b370ec58aa385eb6dc0d9fa96fde309dfb30d0165d91f250"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"22iPDu7F6XpLqa31U/ttI5BlKEieb0EkBH8WRqeRJ8KVflY+nzWo3y6DnTakTO38y+rVqfcrGZm1s7Q7qmBJAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T07:15:03.931412Z","bundle_sha256":"27760def1810dcf73a352cf0a05bb880b248cab4701461697dd0be59d4c573cd"}}