{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:DE6XVPL6ITSYUTUPOIBFFFIVGH","short_pith_number":"pith:DE6XVPL6","canonical_record":{"source":{"id":"1112.5830","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-12-26T10:17:59Z","cross_cats_sorted":[],"title_canon_sha256":"b27b7f4160d21d2a02736dd259fd94e50dda0a234948d7f279f47b3b13030acc","abstract_canon_sha256":"f7b604f5f99f3630b2c1a3670e10bdae7414d8405e30564d308730e0dd31df09"},"schema_version":"1.0"},"canonical_sha256":"193d7abd7e44e58a4e8f720252951531eb1c6be14dd0731d445aad2c1e555a1c","source":{"kind":"arxiv","id":"1112.5830","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5830","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5830v2","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5830","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"pith_short_12","alias_value":"DE6XVPL6ITSY","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DE6XVPL6ITSYUTUP","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DE6XVPL6","created_at":"2026-05-18T12:26:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:DE6XVPL6ITSYUTUPOIBFFFIVGH","target":"record","payload":{"canonical_record":{"source":{"id":"1112.5830","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-12-26T10:17:59Z","cross_cats_sorted":[],"title_canon_sha256":"b27b7f4160d21d2a02736dd259fd94e50dda0a234948d7f279f47b3b13030acc","abstract_canon_sha256":"f7b604f5f99f3630b2c1a3670e10bdae7414d8405e30564d308730e0dd31df09"},"schema_version":"1.0"},"canonical_sha256":"193d7abd7e44e58a4e8f720252951531eb1c6be14dd0731d445aad2c1e555a1c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:18.485282Z","signature_b64":"JXiPZJWgxMxAtp9n2mg8ZqjGQ0LNIA21QKI4b1PzpBXQcCM9nQ6TSLs2u6BDeTEnuX5HTCDHasetOk4TjDV6Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"193d7abd7e44e58a4e8f720252951531eb1c6be14dd0731d445aad2c1e555a1c","last_reissued_at":"2026-05-18T03:46:18.484755Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:18.484755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1112.5830","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":"2026-05-18T03:46:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q12qYOI0jMOMum6hXXOOJPSCjG+KV0WuBQD8q4vSH5YxcpuyBAictopJL2FEaILXbL784AkZIbvarAYTg0moBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:18:59.032168Z"},"content_sha256":"28cba16dd5084c8eddc272e2f6a55b0122d2737ba06fa50fb7dfaf0e331040cd","schema_version":"1.0","event_id":"sha256:28cba16dd5084c8eddc272e2f6a55b0122d2737ba06fa50fb7dfaf0e331040cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:DE6XVPL6ITSYUTUPOIBFFFIVGH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classical to quantum in large number limit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Kavan Modi, Kazuya Yuasa, Rosario Fazio, Saverio Pascazio, Vlatko Vedral","submitted_at":"2011-12-26T10:17:59Z","abstract_excerpt":"We construct a quantumness witness following the work of Alicki and van Ryn (AvR) in \"A simple test of quantumness for a single system\" [J. Phys. A: Math. Theor., vol. 41, 062001 (2008)]. The AvR test is designed to detect quantumness. We reformulate the AvR test by defining it for quantum states rather than for observables. This allows us to identify the necessary quantities and resources to detect quantumness for any given system. The first quantity turns out to be the purity of the system. When applying the witness to a system with even moderate mixedness the protocol is unable to reveal an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5830","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":""},"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":"2026-05-18T03:46:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9xbGdrlzcB0CIxDBGRApMJ3H1x1tIzuT1rWnt6tKqdv9p3hb7NUG5BW1dfyygQu2dz5rhhAdKumVpBLIEP+gDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-18T22:18:59.032651Z"},"content_sha256":"43c88049b57d95432a052ae712fe72b5ef5b7dcb99dbf480f2eee567ccf6da6b","schema_version":"1.0","event_id":"sha256:43c88049b57d95432a052ae712fe72b5ef5b7dcb99dbf480f2eee567ccf6da6b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/bundle.json","state_url":"https://pith.science/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/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":"2026-05-18T22:18:59Z","links":{"resolver":"https://pith.science/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH","bundle":"https://pith.science/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/bundle.json","state":"https://pith.science/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DE6XVPL6ITSYUTUPOIBFFFIVGH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:DE6XVPL6ITSYUTUPOIBFFFIVGH","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":"f7b604f5f99f3630b2c1a3670e10bdae7414d8405e30564d308730e0dd31df09","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-12-26T10:17:59Z","title_canon_sha256":"b27b7f4160d21d2a02736dd259fd94e50dda0a234948d7f279f47b3b13030acc"},"schema_version":"1.0","source":{"id":"1112.5830","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1112.5830","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"arxiv_version","alias_value":"1112.5830v2","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1112.5830","created_at":"2026-05-18T03:46:18Z"},{"alias_kind":"pith_short_12","alias_value":"DE6XVPL6ITSY","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_16","alias_value":"DE6XVPL6ITSYUTUP","created_at":"2026-05-18T12:26:26Z"},{"alias_kind":"pith_short_8","alias_value":"DE6XVPL6","created_at":"2026-05-18T12:26:26Z"}],"graph_snapshots":[{"event_id":"sha256:43c88049b57d95432a052ae712fe72b5ef5b7dcb99dbf480f2eee567ccf6da6b","target":"graph","created_at":"2026-05-18T03:46:18Z","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 construct a quantumness witness following the work of Alicki and van Ryn (AvR) in \"A simple test of quantumness for a single system\" [J. Phys. A: Math. Theor., vol. 41, 062001 (2008)]. The AvR test is designed to detect quantumness. We reformulate the AvR test by defining it for quantum states rather than for observables. This allows us to identify the necessary quantities and resources to detect quantumness for any given system. The first quantity turns out to be the purity of the system. When applying the witness to a system with even moderate mixedness the protocol is unable to reveal an","authors_text":"Kavan Modi, Kazuya Yuasa, Rosario Fazio, Saverio Pascazio, Vlatko Vedral","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-12-26T10:17:59Z","title":"Classical to quantum in large number limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1112.5830","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":"sha256:28cba16dd5084c8eddc272e2f6a55b0122d2737ba06fa50fb7dfaf0e331040cd","target":"record","created_at":"2026-05-18T03:46:18Z","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":"f7b604f5f99f3630b2c1a3670e10bdae7414d8405e30564d308730e0dd31df09","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-12-26T10:17:59Z","title_canon_sha256":"b27b7f4160d21d2a02736dd259fd94e50dda0a234948d7f279f47b3b13030acc"},"schema_version":"1.0","source":{"id":"1112.5830","kind":"arxiv","version":2}},"canonical_sha256":"193d7abd7e44e58a4e8f720252951531eb1c6be14dd0731d445aad2c1e555a1c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"193d7abd7e44e58a4e8f720252951531eb1c6be14dd0731d445aad2c1e555a1c","first_computed_at":"2026-05-18T03:46:18.484755Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:18.484755Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JXiPZJWgxMxAtp9n2mg8ZqjGQ0LNIA21QKI4b1PzpBXQcCM9nQ6TSLs2u6BDeTEnuX5HTCDHasetOk4TjDV6Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:18.485282Z","signed_message":"canonical_sha256_bytes"},"source_id":"1112.5830","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:28cba16dd5084c8eddc272e2f6a55b0122d2737ba06fa50fb7dfaf0e331040cd","sha256:43c88049b57d95432a052ae712fe72b5ef5b7dcb99dbf480f2eee567ccf6da6b"],"state_sha256":"1230f96d1d9095437518524bffcf994a90213a02f3b947ac3b4d9e9d3114ec2a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1WUTkQ34zYcNIm+SaSHbDJrNn7ENqi18Fc1IdZRRZRNLgDk36MO0QjRc/LB5XNwhrmDwnjI5k0lNsDxTbG9lAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-18T22:18:59.034009Z","bundle_sha256":"fec84632441dd9861569776b0bd2bbc5ffbff047f27bec5c092be8e53dbde5cc"}}