{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:QMVFUNYM3VNNWUUEFTV5R6GUED","short_pith_number":"pith:QMVFUNYM","schema_version":"1.0","canonical_sha256":"832a5a370cdd5adb52842cebd8f8d420fccae9001b6a037218e183aa9fd1c088","source":{"kind":"arxiv","id":"2103.15070","version":1},"attestation_state":"computed","paper":{"title":"Experimental demonstration of quantum pigeonhole paradox","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bi-Ying Wang, Chang Liu, Chao-Yang Lu, He-Liang Huang, Jian-Wei Pan, Li Li, Ming-Cheng Chen, Nai-Le Liu, Xi-Lin Wang, Yi-Han Luo","submitted_at":"2021-03-28T07:22:18Z","abstract_excerpt":"We experimentally demonstrate that when three single photons transmit through two polarization channels, in a well-defined pre- and postselected ensemble, there are no two photons in the same polarization channel by weak-strength measurement, a counter-intuitive quantum counting effect called quantum pigeonhole paradox. We further show that this effect breaks down in second-order measurement. These results indicate the existence of quantum pigeonhole paradox and its operating regime."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2103.15070","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-03-28T07:22:18Z","cross_cats_sorted":[],"title_canon_sha256":"6541c2f29cf75ac6ef227bf45817a51a508cf5b48d8e0fda6cae67e119336322","abstract_canon_sha256":"4c11d0ccb9a27065c7ac2108b76a87ce4302d020bb8a7848f3ad4e6be3a2608d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:27:02.301165Z","signature_b64":"YO8HpVRvM1XaKpTuHgRh8++YVPrKG5pwDd188/VXIRqtP3yfgMovajTrQfVpMIZXyQnacArlkP1O0rq1szhuAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"832a5a370cdd5adb52842cebd8f8d420fccae9001b6a037218e183aa9fd1c088","last_reissued_at":"2026-07-05T02:27:02.300805Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:27:02.300805Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Experimental demonstration of quantum pigeonhole paradox","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bi-Ying Wang, Chang Liu, Chao-Yang Lu, He-Liang Huang, Jian-Wei Pan, Li Li, Ming-Cheng Chen, Nai-Le Liu, Xi-Lin Wang, Yi-Han Luo","submitted_at":"2021-03-28T07:22:18Z","abstract_excerpt":"We experimentally demonstrate that when three single photons transmit through two polarization channels, in a well-defined pre- and postselected ensemble, there are no two photons in the same polarization channel by weak-strength measurement, a counter-intuitive quantum counting effect called quantum pigeonhole paradox. We further show that this effect breaks down in second-order measurement. These results indicate the existence of quantum pigeonhole paradox and its operating regime."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.15070","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/2103.15070/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2103.15070","created_at":"2026-07-05T02:27:02.300866+00:00"},{"alias_kind":"arxiv_version","alias_value":"2103.15070v1","created_at":"2026-07-05T02:27:02.300866+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.15070","created_at":"2026-07-05T02:27:02.300866+00:00"},{"alias_kind":"pith_short_12","alias_value":"QMVFUNYM3VNN","created_at":"2026-07-05T02:27:02.300866+00:00"},{"alias_kind":"pith_short_16","alias_value":"QMVFUNYM3VNNWUUE","created_at":"2026-07-05T02:27:02.300866+00:00"},{"alias_kind":"pith_short_8","alias_value":"QMVFUNYM","created_at":"2026-07-05T02:27:02.300866+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED","json":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED.json","graph_json":"https://pith.science/api/pith-number/QMVFUNYM3VNNWUUEFTV5R6GUED/graph.json","events_json":"https://pith.science/api/pith-number/QMVFUNYM3VNNWUUEFTV5R6GUED/events.json","paper":"https://pith.science/paper/QMVFUNYM"},"agent_actions":{"view_html":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED","download_json":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED.json","view_paper":"https://pith.science/paper/QMVFUNYM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2103.15070&json=true","fetch_graph":"https://pith.science/api/pith-number/QMVFUNYM3VNNWUUEFTV5R6GUED/graph.json","fetch_events":"https://pith.science/api/pith-number/QMVFUNYM3VNNWUUEFTV5R6GUED/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED/action/storage_attestation","attest_author":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED/action/author_attestation","sign_citation":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED/action/citation_signature","submit_replication":"https://pith.science/pith/QMVFUNYM3VNNWUUEFTV5R6GUED/action/replication_record"}},"created_at":"2026-07-05T02:27:02.300866+00:00","updated_at":"2026-07-05T02:27:02.300866+00:00"}