{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:WTHLRR5EJ74PYSBZ2CR7E6RRRT","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":"6dc790154daa257425f6003da2b3cc22ec811fcd0dd0e1a60482ed49df20a927","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-12T10:58:51Z","title_canon_sha256":"9ab6a544f94d1c38033856a8b515f80a5107beded19e3d4d8bfbb0ef62df22c9"},"schema_version":"1.0","source":{"id":"1612.03613","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.03613","created_at":"2026-05-18T00:47:05Z"},{"alias_kind":"arxiv_version","alias_value":"1612.03613v1","created_at":"2026-05-18T00:47:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.03613","created_at":"2026-05-18T00:47:05Z"},{"alias_kind":"pith_short_12","alias_value":"WTHLRR5EJ74P","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"WTHLRR5EJ74PYSBZ","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"WTHLRR5E","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:7ad8f8dc517eab33bf9518f6109923ad67c345fcbcdab21a63ac47cb613c9ce5","target":"graph","created_at":"2026-05-18T00:47:05Z","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 report investigation on quantum discord in classical second-order interference. In particular, we theoretically show that a bipartite state with D = 0.311 of discord can be generated via classical second-order interference. We also experimentally verify the theory by obtaining D = 0.197 +- 0.060 of non-zero discord state. Together with the fact that non-classicalities originated from physical constraints and information theoretic perspectives are not equivalent, this result provides an insight to understand the nature of quantum discord.","authors_text":"Hyang-Tag Lim, Jiwon Yune, Kang-Hee Hong, Kyunghwan Oh, Osung Kwon, Sang-Wook Han, Sung Moon, Yong-Su Kim, Yoon-Ho Kim, Yujun Choi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-12T10:58:51Z","title":"Generation of a non-zero discord bipartite state with classical second-order interference"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.03613","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":"sha256:3610eb3b1d734471c1c24bcae08db91371acc7ee2542a1c29e8def10cdda7ab2","target":"record","created_at":"2026-05-18T00:47:05Z","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":"6dc790154daa257425f6003da2b3cc22ec811fcd0dd0e1a60482ed49df20a927","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-12-12T10:58:51Z","title_canon_sha256":"9ab6a544f94d1c38033856a8b515f80a5107beded19e3d4d8bfbb0ef62df22c9"},"schema_version":"1.0","source":{"id":"1612.03613","kind":"arxiv","version":1}},"canonical_sha256":"b4ceb8c7a44ff8fc4839d0a3f27a318ccdb03e4e121f353fe775dfdb39d8c575","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4ceb8c7a44ff8fc4839d0a3f27a318ccdb03e4e121f353fe775dfdb39d8c575","first_computed_at":"2026-05-18T00:47:05.649606Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:47:05.649606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gaTBXgjE1D6sMCy1Yq68Rjf7hTrHO1uh+BHjMYQMnwNJFm9ucgigoex5V+HUdx2knsMxWBxrwW1fkrtSkCk2Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:47:05.650247Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.03613","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3610eb3b1d734471c1c24bcae08db91371acc7ee2542a1c29e8def10cdda7ab2","sha256:7ad8f8dc517eab33bf9518f6109923ad67c345fcbcdab21a63ac47cb613c9ce5"],"state_sha256":"69aa2b3bcd1587223b32445250ab129beb983dfa843c852e577202022718a8a4"}