{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:6R7PAI7SBPU25B6GL7YJBWBNTQ","short_pith_number":"pith:6R7PAI7S","schema_version":"1.0","canonical_sha256":"f47ef023f20be9ae87c65ff090d82d9c0de123f47f95bb7a8546325d1ec60281","source":{"kind":"arxiv","id":"0908.0623","version":1},"attestation_state":"computed","paper":{"title":"Engineering of triply entangled states in a single-neutron system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Gerald Badurek, Helmut Rauch, Rudolf Loidl, Stephan Sponar, Yuji Hasegawa","submitted_at":"2009-08-05T09:15:03Z","abstract_excerpt":"We implemented a triply entangled Greenberger-Horne-Zeilinger(GHZ)-like state and coherently manipulated the spin, path, and energy degrees of freedom in a single neutron system. The GHZ-like state was analyzed with an inequality derived by Mermin: we determined the four expectation values and finally obtained M = 2.558 +/- 0.004 > 2, which exhibits a clear violation of the noncontextual assumption and confirms quantum contextuality."},"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":"0908.0623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-05T09:15:03Z","cross_cats_sorted":[],"title_canon_sha256":"10306c097ea1599098e2e2c24c6542bf802fbe63ed11c1b7a79d6028e0279ec1","abstract_canon_sha256":"d5c7baf8240cb5d0efc1c8f150e95a6d1242a575af653000632ee081a15dba3f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:44.520026Z","signature_b64":"n1CTMdYMjw1DKjyLlNq1bDKCq4q4fsNSgEwjjcMoKR/PUXbol8A6P+pgeZZE7veqxe6yRLIq6bO+HTmVoVjvAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f47ef023f20be9ae87c65ff090d82d9c0de123f47f95bb7a8546325d1ec60281","last_reissued_at":"2026-05-18T02:12:44.519338Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:44.519338Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Engineering of triply entangled states in a single-neutron system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Gerald Badurek, Helmut Rauch, Rudolf Loidl, Stephan Sponar, Yuji Hasegawa","submitted_at":"2009-08-05T09:15:03Z","abstract_excerpt":"We implemented a triply entangled Greenberger-Horne-Zeilinger(GHZ)-like state and coherently manipulated the spin, path, and energy degrees of freedom in a single neutron system. The GHZ-like state was analyzed with an inequality derived by Mermin: we determined the four expectation values and finally obtained M = 2.558 +/- 0.004 > 2, which exhibits a clear violation of the noncontextual assumption and confirms quantum contextuality."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.0623","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0908.0623","created_at":"2026-05-18T02:12:44.519440+00:00"},{"alias_kind":"arxiv_version","alias_value":"0908.0623v1","created_at":"2026-05-18T02:12:44.519440+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.0623","created_at":"2026-05-18T02:12:44.519440+00:00"},{"alias_kind":"pith_short_12","alias_value":"6R7PAI7SBPU2","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"6R7PAI7SBPU25B6G","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"6R7PAI7S","created_at":"2026-05-18T12:25:58.837520+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/6R7PAI7SBPU25B6GL7YJBWBNTQ","json":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ.json","graph_json":"https://pith.science/api/pith-number/6R7PAI7SBPU25B6GL7YJBWBNTQ/graph.json","events_json":"https://pith.science/api/pith-number/6R7PAI7SBPU25B6GL7YJBWBNTQ/events.json","paper":"https://pith.science/paper/6R7PAI7S"},"agent_actions":{"view_html":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ","download_json":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ.json","view_paper":"https://pith.science/paper/6R7PAI7S","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0908.0623&json=true","fetch_graph":"https://pith.science/api/pith-number/6R7PAI7SBPU25B6GL7YJBWBNTQ/graph.json","fetch_events":"https://pith.science/api/pith-number/6R7PAI7SBPU25B6GL7YJBWBNTQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ/action/storage_attestation","attest_author":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ/action/author_attestation","sign_citation":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ/action/citation_signature","submit_replication":"https://pith.science/pith/6R7PAI7SBPU25B6GL7YJBWBNTQ/action/replication_record"}},"created_at":"2026-05-18T02:12:44.519440+00:00","updated_at":"2026-05-18T02:12:44.519440+00:00"}