{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZXHSHNLX4L7KOKNB35IRFNPUSR","short_pith_number":"pith:ZXHSHNLX","canonical_record":{"source":{"id":"1609.05717","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-19T13:29:40Z","cross_cats_sorted":[],"title_canon_sha256":"ee49e164a6a3030dfd3070f5c7b43121bd8aaee52e5a3a862f507a1eaf3eca9e","abstract_canon_sha256":"17689624f21a2358ca1fdc8f46a3684aaac3eab33bdccb0f707dfb72ddd4814e"},"schema_version":"1.0"},"canonical_sha256":"cdcf23b577e2fea729a1df5112b5f4946ed18f162a064f3cb54a6500d31ecb6b","source":{"kind":"arxiv","id":"1609.05717","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.05717","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"arxiv_version","alias_value":"1609.05717v2","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.05717","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_12","alias_value":"ZXHSHNLX4L7K","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"ZXHSHNLX4L7KOKNB","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"ZXHSHNLX","created_at":"2026-07-05T02:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZXHSHNLX4L7KOKNB35IRFNPUSR","target":"record","payload":{"canonical_record":{"source":{"id":"1609.05717","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-19T13:29:40Z","cross_cats_sorted":[],"title_canon_sha256":"ee49e164a6a3030dfd3070f5c7b43121bd8aaee52e5a3a862f507a1eaf3eca9e","abstract_canon_sha256":"17689624f21a2358ca1fdc8f46a3684aaac3eab33bdccb0f707dfb72ddd4814e"},"schema_version":"1.0"},"canonical_sha256":"cdcf23b577e2fea729a1df5112b5f4946ed18f162a064f3cb54a6500d31ecb6b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:31:15.710991Z","signature_b64":"I8FjF0tnF6/726PSt/MhvYDqkuLUGTinhb4EuahEt2UZP8zc9GWg+GtFOclXlGz6OqxBF/Lz5YyEsPicZxG8DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cdcf23b577e2fea729a1df5112b5f4946ed18f162a064f3cb54a6500d31ecb6b","last_reissued_at":"2026-07-05T02:31:15.710469Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:31:15.710469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.05717","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":"2026-07-05T02:31:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4osZt7qSdT5i60DWOXPdUPw+pvonWUAdxEpKCnYQwZxAH3A2TwmqvvBRTgd31N1MXriLcCCNnSZ+9iErAbAyAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T03:12:04.463078Z"},"content_sha256":"d4a5e3ebae2d7eccac405f1c2da5ca7edd523e7198310bff4b269c6c5de25f9a","schema_version":"1.0","event_id":"sha256:d4a5e3ebae2d7eccac405f1c2da5ca7edd523e7198310bff4b269c6c5de25f9a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZXHSHNLX4L7KOKNB35IRFNPUSR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Macroscopic Two-Dimensional Polariton Condensates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"Carlos S\\'anchez Mu\\~noz, Daniele Sanvitto, Dario Ballarini, Davide Caputo, Fabrice P. Laussy, Giuseppe Gigli, Kenneth West, Loren N. Pfeiffer, Lorenzo Dominici, Marzena H. Szyma\\'nska, Milena De Giorgi","submitted_at":"2016-09-19T13:29:40Z","abstract_excerpt":"We report a record-size, two-dimensional polariton condensate of a fraction of a millimeter radius free from the presence of an exciton reservoir. This macroscopically occupied state is formed by the ballistically expanding polariton flow that relaxes and condenses over a large area outside of the excitation spot. The density of this trap-free condensate is < 1 polariton/{\\mu}m^2, reducing the phase noise induced by the interaction energy. Moreover, the backflow effect, recently predicted for the nonparabolic polariton dispersion, is observed here for the first time in the fast-expanding wave "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.05717","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1609.05717/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":"2026-07-05T02:31:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UuD9c+XFuyHZlAuXxrKerFaHrrdQNSqbSGWkewPk24X77Ug+zbprTHYg+2/K283eDsDDhuosST1eFVLxi9Z0Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-12T03:12:04.463470Z"},"content_sha256":"40d6681a6c97b9f2274d1bd5154a61c5e68a8b1897100a613d5d0abb3825b651","schema_version":"1.0","event_id":"sha256:40d6681a6c97b9f2274d1bd5154a61c5e68a8b1897100a613d5d0abb3825b651"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/bundle.json","state_url":"https://pith.science/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/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":"2026-07-12T03:12:04Z","links":{"resolver":"https://pith.science/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR","bundle":"https://pith.science/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/bundle.json","state":"https://pith.science/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZXHSHNLX4L7KOKNB35IRFNPUSR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZXHSHNLX4L7KOKNB35IRFNPUSR","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":"17689624f21a2358ca1fdc8f46a3684aaac3eab33bdccb0f707dfb72ddd4814e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-19T13:29:40Z","title_canon_sha256":"ee49e164a6a3030dfd3070f5c7b43121bd8aaee52e5a3a862f507a1eaf3eca9e"},"schema_version":"1.0","source":{"id":"1609.05717","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.05717","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"arxiv_version","alias_value":"1609.05717v2","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.05717","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_12","alias_value":"ZXHSHNLX4L7K","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"ZXHSHNLX4L7KOKNB","created_at":"2026-07-05T02:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"ZXHSHNLX","created_at":"2026-07-05T02:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:40d6681a6c97b9f2274d1bd5154a61c5e68a8b1897100a613d5d0abb3825b651","target":"graph","created_at":"2026-07-05T02:31:15Z","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/1609.05717/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report a record-size, two-dimensional polariton condensate of a fraction of a millimeter radius free from the presence of an exciton reservoir. This macroscopically occupied state is formed by the ballistically expanding polariton flow that relaxes and condenses over a large area outside of the excitation spot. The density of this trap-free condensate is < 1 polariton/{\\mu}m^2, reducing the phase noise induced by the interaction energy. Moreover, the backflow effect, recently predicted for the nonparabolic polariton dispersion, is observed here for the first time in the fast-expanding wave ","authors_text":"Carlos S\\'anchez Mu\\~noz, Daniele Sanvitto, Dario Ballarini, Davide Caputo, Fabrice P. Laussy, Giuseppe Gigli, Kenneth West, Loren N. Pfeiffer, Lorenzo Dominici, Marzena H. Szyma\\'nska, Milena De Giorgi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-19T13:29:40Z","title":"Macroscopic Two-Dimensional Polariton Condensates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.05717","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:d4a5e3ebae2d7eccac405f1c2da5ca7edd523e7198310bff4b269c6c5de25f9a","target":"record","created_at":"2026-07-05T02:31:15Z","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":"17689624f21a2358ca1fdc8f46a3684aaac3eab33bdccb0f707dfb72ddd4814e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2016-09-19T13:29:40Z","title_canon_sha256":"ee49e164a6a3030dfd3070f5c7b43121bd8aaee52e5a3a862f507a1eaf3eca9e"},"schema_version":"1.0","source":{"id":"1609.05717","kind":"arxiv","version":2}},"canonical_sha256":"cdcf23b577e2fea729a1df5112b5f4946ed18f162a064f3cb54a6500d31ecb6b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdcf23b577e2fea729a1df5112b5f4946ed18f162a064f3cb54a6500d31ecb6b","first_computed_at":"2026-07-05T02:31:15.710469Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:31:15.710469Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I8FjF0tnF6/726PSt/MhvYDqkuLUGTinhb4EuahEt2UZP8zc9GWg+GtFOclXlGz6OqxBF/Lz5YyEsPicZxG8DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:31:15.710991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.05717","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4a5e3ebae2d7eccac405f1c2da5ca7edd523e7198310bff4b269c6c5de25f9a","sha256:40d6681a6c97b9f2274d1bd5154a61c5e68a8b1897100a613d5d0abb3825b651"],"state_sha256":"d16d6dd5e5facf625f882736dde31f567f60359fc9291b4c20e3e7484fa4c9e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KzK9S1u0sYltWj+GTmeFSdda8qrTEGHE9Ok+aPCzbJvGtw22R7FdoVHBUSxtRacVjFceN/0DA5ezjWED57hoDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-12T03:12:04.466174Z","bundle_sha256":"1b8935ee7701800ca2f85f3ed11083114660a72f0bd4cdcea4635b896ea3a996"}}