{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:5BCVBQJN4O4HV2NKJYBRSFKMYH","short_pith_number":"pith:5BCVBQJN","canonical_record":{"source":{"id":"quant-ph/0401002","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-01-01T20:59:05Z","cross_cats_sorted":[],"title_canon_sha256":"418b935cb6acc78da92eb5e7226ee1fc00e76e9959ca3b2659987f4f89da61b4","abstract_canon_sha256":"c735f5594caaa5e9bfe55d314ac79e7b131c56fedff4ba2529eda7f2db95ca7f"},"schema_version":"1.0"},"canonical_sha256":"e84550c12de3b87ae9aa4e0319154cc1fde0b34ab6cd91f77915fa561d5144b7","source":{"kind":"arxiv","id":"quant-ph/0401002","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0401002","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0401002v2","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0401002","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"5BCVBQJN4O4H","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"5BCVBQJN4O4HV2NK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"5BCVBQJN","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:5BCVBQJN4O4HV2NKJYBRSFKMYH","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0401002","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-01-01T20:59:05Z","cross_cats_sorted":[],"title_canon_sha256":"418b935cb6acc78da92eb5e7226ee1fc00e76e9959ca3b2659987f4f89da61b4","abstract_canon_sha256":"c735f5594caaa5e9bfe55d314ac79e7b131c56fedff4ba2529eda7f2db95ca7f"},"schema_version":"1.0"},"canonical_sha256":"e84550c12de3b87ae9aa4e0319154cc1fde0b34ab6cd91f77915fa561d5144b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:45.928186Z","signature_b64":"ghm9Nsl7FNkVy8IwZNJSsqapv2v+YWkKBSCecPZTJe22mgnATc+30qceoImG9Lcn4XvFtfuzYFEH3r1CwvhBBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e84550c12de3b87ae9aa4e0319154cc1fde0b34ab6cd91f77915fa561d5144b7","last_reissued_at":"2026-05-18T01:08:45.927826Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:45.927826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0401002","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":"2026-05-18T01:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wt2JUq4/P02A5ZOCJMj5QkMMpc1tjraQQwjodA5k6jaL+QtTs1gW75FqTNAWYV3NQUCHr6kQVNkh3vjpU0pVDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T19:14:20.844972Z"},"content_sha256":"ec081bb5cb187d13fdf6dcc3e85d7c44b5d041216d0881364130ae7029c7102c","schema_version":"1.0","event_id":"sha256:ec081bb5cb187d13fdf6dcc3e85d7c44b5d041216d0881364130ae7029c7102c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:5BCVBQJN4O4HV2NKJYBRSFKMYH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical realization of optimal unambiguous discrimination for pure and mixed quantum states","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Aephraim M. Steinberg, J\\'anos A. Bergou, Masoud Mohseni","submitted_at":"2004-01-01T20:59:05Z","abstract_excerpt":"Quantum mechanics forbids deterministic discrimination among non-orthogonal states. Nonetheless, the capability to distinguish nonorthogonal states unambiguously is an important primitive in quantum information processing. In this work, we experimentally implement generalized measurements in an optical system and demonstrate the first optimal unambiguous discrimination between three nonorthogonal states, with a success rate of 55%, to be compared with the 25% maximum achievable using projective measurements. Furthermore we present the first realization of unambiguous discrimination between a p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0401002","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":"2026-05-18T01:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6VR2ffIyckDv5L9Omni023xzYJ5q506iebjL36dHhMN6TIJaxDXWBLO+/UF7ht+yDpLOWeQdD3T+rV5PhuEOCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T19:14:20.845719Z"},"content_sha256":"dea2321dff8a9cd1bc7f7bcd4c6fb78d2fa6caa779e1b5720f5cbfdc819738e6","schema_version":"1.0","event_id":"sha256:dea2321dff8a9cd1bc7f7bcd4c6fb78d2fa6caa779e1b5720f5cbfdc819738e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/bundle.json","state_url":"https://pith.science/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/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":"2026-06-07T19:14:20Z","links":{"resolver":"https://pith.science/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH","bundle":"https://pith.science/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/bundle.json","state":"https://pith.science/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5BCVBQJN4O4HV2NKJYBRSFKMYH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:5BCVBQJN4O4HV2NKJYBRSFKMYH","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":"c735f5594caaa5e9bfe55d314ac79e7b131c56fedff4ba2529eda7f2db95ca7f","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-01-01T20:59:05Z","title_canon_sha256":"418b935cb6acc78da92eb5e7226ee1fc00e76e9959ca3b2659987f4f89da61b4"},"schema_version":"1.0","source":{"id":"quant-ph/0401002","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0401002","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0401002v2","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0401002","created_at":"2026-05-18T01:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"5BCVBQJN4O4H","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"5BCVBQJN4O4HV2NK","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"5BCVBQJN","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:dea2321dff8a9cd1bc7f7bcd4c6fb78d2fa6caa779e1b5720f5cbfdc819738e6","target":"graph","created_at":"2026-05-18T01:08:45Z","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":"Quantum mechanics forbids deterministic discrimination among non-orthogonal states. Nonetheless, the capability to distinguish nonorthogonal states unambiguously is an important primitive in quantum information processing. In this work, we experimentally implement generalized measurements in an optical system and demonstrate the first optimal unambiguous discrimination between three nonorthogonal states, with a success rate of 55%, to be compared with the 25% maximum achievable using projective measurements. Furthermore we present the first realization of unambiguous discrimination between a p","authors_text":"Aephraim M. Steinberg, J\\'anos A. Bergou, Masoud Mohseni","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2004-01-01T20:59:05Z","title":"Optical realization of optimal unambiguous discrimination for pure and mixed quantum states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0401002","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:ec081bb5cb187d13fdf6dcc3e85d7c44b5d041216d0881364130ae7029c7102c","target":"record","created_at":"2026-05-18T01:08:45Z","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":"c735f5594caaa5e9bfe55d314ac79e7b131c56fedff4ba2529eda7f2db95ca7f","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-01-01T20:59:05Z","title_canon_sha256":"418b935cb6acc78da92eb5e7226ee1fc00e76e9959ca3b2659987f4f89da61b4"},"schema_version":"1.0","source":{"id":"quant-ph/0401002","kind":"arxiv","version":2}},"canonical_sha256":"e84550c12de3b87ae9aa4e0319154cc1fde0b34ab6cd91f77915fa561d5144b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e84550c12de3b87ae9aa4e0319154cc1fde0b34ab6cd91f77915fa561d5144b7","first_computed_at":"2026-05-18T01:08:45.927826Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:45.927826Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ghm9Nsl7FNkVy8IwZNJSsqapv2v+YWkKBSCecPZTJe22mgnATc+30qceoImG9Lcn4XvFtfuzYFEH3r1CwvhBBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:45.928186Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0401002","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec081bb5cb187d13fdf6dcc3e85d7c44b5d041216d0881364130ae7029c7102c","sha256:dea2321dff8a9cd1bc7f7bcd4c6fb78d2fa6caa779e1b5720f5cbfdc819738e6"],"state_sha256":"2982df4e7f4012373c085bd338cc48e263d6aa245737dbb09314cd4d0deddf23"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ztBucxvfmX3WTQadHlm/cVoEAw8k0Go813BzKdmv9XVoLdHTY3K6PMx15dascTBx/pzEnM+1io5IaJLEBWR/AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T19:14:20.849956Z","bundle_sha256":"5ba73aa085c57fceaba6731cb18f09d7cbe7c008df1f60c60a83c0c3d7a84211"}}