{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:XYHC2JNB7RFTMDTI3JDVKS6SDI","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":"9d502a65ca9b49f5d2fb68501c5117cba0496951ce9dcd3c79727f593b857760","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-05-13T18:56:15Z","title_canon_sha256":"17da4344cbb43405649d37b3bb21f89ba6991cf78270e8d46814b24e59f982f5"},"schema_version":"1.0","source":{"id":"1205.2898","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2898","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2898v2","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2898","created_at":"2026-05-18T03:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"XYHC2JNB7RFT","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"XYHC2JNB7RFTMDTI","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"XYHC2JNB","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:b26a5d403afee92b7204492ac1afa64e73b9126bc740be7d82f744f4aafc391d","target":"graph","created_at":"2026-05-18T03:54:05Z","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":"It is shown that a nonclassicality witness, whose expectation value can be measured for all quantum states, can be constructed from every nonclassicality filter. This finding leads to a set of universal witnesses, parameterized by only three real numbers, for the detection of nonclassicality of any quantum state of a harmonic oscillator. An explicit operator expression is given for such a universal witness. The application of the witnesses is demonstrated for a nontrivial example, and its experimental measurement is briefly considered.","authors_text":"T. Kiesel, W. Vogel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-05-13T18:56:15Z","title":"Universal nonclassicality witnesses for harmonic oscillators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2898","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:ea68d529f160435cc36107d1bdbf085103bbe60f08a6c64408bf9a23e5e6ad0a","target":"record","created_at":"2026-05-18T03:54:05Z","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":"9d502a65ca9b49f5d2fb68501c5117cba0496951ce9dcd3c79727f593b857760","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-05-13T18:56:15Z","title_canon_sha256":"17da4344cbb43405649d37b3bb21f89ba6991cf78270e8d46814b24e59f982f5"},"schema_version":"1.0","source":{"id":"1205.2898","kind":"arxiv","version":2}},"canonical_sha256":"be0e2d25a1fc4b360e68da47554bd21a1f9938136394e810d5e42ba596237424","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"be0e2d25a1fc4b360e68da47554bd21a1f9938136394e810d5e42ba596237424","first_computed_at":"2026-05-18T03:54:05.551755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:05.551755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tYPve2tTTf0z2a6tgL6EaWsJgLOh1BGj++vRJal1OzH0ukCtteG3Hv2FOrerMhXyuJ6llOl3WoZQoixfrOXfBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:05.552375Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2898","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea68d529f160435cc36107d1bdbf085103bbe60f08a6c64408bf9a23e5e6ad0a","sha256:b26a5d403afee92b7204492ac1afa64e73b9126bc740be7d82f744f4aafc391d"],"state_sha256":"187fc7b2134786dc2b6e51fac19f058cee6e3801434f27900a218c2b7375d1b6"}