{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:6A6JAWRNQW74NFDBBWUEWCRXMR","short_pith_number":"pith:6A6JAWRN","canonical_record":{"source":{"id":"1206.2821","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T14:33:14Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"3dbe28c7cc3fdf970d8eb3832458b3338b84eefa799da8952ab2c95a5df9446c","abstract_canon_sha256":"4774a48da7502b51565254b22e345cd03bfb8756e95fd8ac345f8ec85bb6f353"},"schema_version":"1.0"},"canonical_sha256":"f03c905a2d85bfc694610da84b0a37646bd96b86937ce4944a1a36e497d64f62","source":{"kind":"arxiv","id":"1206.2821","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.2821","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"arxiv_version","alias_value":"1206.2821v3","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.2821","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"pith_short_12","alias_value":"6A6JAWRNQW74","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6A6JAWRNQW74NFDB","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6A6JAWRN","created_at":"2026-05-18T12:26:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:6A6JAWRNQW74NFDBBWUEWCRXMR","target":"record","payload":{"canonical_record":{"source":{"id":"1206.2821","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T14:33:14Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"3dbe28c7cc3fdf970d8eb3832458b3338b84eefa799da8952ab2c95a5df9446c","abstract_canon_sha256":"4774a48da7502b51565254b22e345cd03bfb8756e95fd8ac345f8ec85bb6f353"},"schema_version":"1.0"},"canonical_sha256":"f03c905a2d85bfc694610da84b0a37646bd96b86937ce4944a1a36e497d64f62","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:25:33.463897Z","signature_b64":"NeYEzoO2XmzvBb0Fo7RaAwGvW0oIqD64H13Jbg6YfSxrVL+S9k/9lCtD2qjVRE5CwQKeCHSonzOmGjWhBZnDAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f03c905a2d85bfc694610da84b0a37646bd96b86937ce4944a1a36e497d64f62","last_reissued_at":"2026-05-18T03:25:33.463262Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:25:33.463262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.2821","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:25:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3a5xXxc/nyT6krEbzxtTvC60elCCEABioPXR+cp46XCvYXzVLfRakp4QWI1srdFnaqX3mlK1y276B5EZ6/9lCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:34:11.922286Z"},"content_sha256":"c9eabb337b987bc4236a59512d486c304d0605e7d4aa8161775b5f5e46be621a","schema_version":"1.0","event_id":"sha256:c9eabb337b987bc4236a59512d486c304d0605e7d4aa8161775b5f5e46be621a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:6A6JAWRNQW74NFDBBWUEWCRXMR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Broadcasting Quantum Fisher Information","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"C. H. Oh, Shunlong Luo, Xiaoguang Wang, Xiao-Ming Lu, Zhe Sun","submitted_at":"2012-06-13T14:33:14Z","abstract_excerpt":"It is well known that classical information can be cloned, but non-orthogonal quantum states cannot be cloned, and non-commuting quantum states cannot be broadcast. We conceive a scenario in which the object we want to broadcast is the statistical distinguishability, as quantified by quantum Fisher information, about a signal parameter encoded in quantum states. We show that quantum Fisher information cannot be cloned, whilst it might be broadcast even when the input states are non-commuting. This situation interpolates between cloning of classical information and no-broadcasting of quantum in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.2821","kind":"arxiv","version":3},"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":"2026-05-18T03:25:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j2XEhoecuzTLi4Nm0QzhDtsJgUhgmVa3FcYQ8k8b9kUz61GEMsqHq+SvwC3BYjAFtMfn9W41AAziHW24eApBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T19:34:11.922663Z"},"content_sha256":"87c83fa6e9f6ab62d929b79188a4dc8172be00ab9f7766513dc52f20a165b8da","schema_version":"1.0","event_id":"sha256:87c83fa6e9f6ab62d929b79188a4dc8172be00ab9f7766513dc52f20a165b8da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/bundle.json","state_url":"https://pith.science/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/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":"2026-06-04T19:34:11Z","links":{"resolver":"https://pith.science/pith/6A6JAWRNQW74NFDBBWUEWCRXMR","bundle":"https://pith.science/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/bundle.json","state":"https://pith.science/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6A6JAWRNQW74NFDBBWUEWCRXMR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:6A6JAWRNQW74NFDBBWUEWCRXMR","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":"4774a48da7502b51565254b22e345cd03bfb8756e95fd8ac345f8ec85bb6f353","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T14:33:14Z","title_canon_sha256":"3dbe28c7cc3fdf970d8eb3832458b3338b84eefa799da8952ab2c95a5df9446c"},"schema_version":"1.0","source":{"id":"1206.2821","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.2821","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"arxiv_version","alias_value":"1206.2821v3","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.2821","created_at":"2026-05-18T03:25:33Z"},{"alias_kind":"pith_short_12","alias_value":"6A6JAWRNQW74","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_16","alias_value":"6A6JAWRNQW74NFDB","created_at":"2026-05-18T12:26:56Z"},{"alias_kind":"pith_short_8","alias_value":"6A6JAWRN","created_at":"2026-05-18T12:26:56Z"}],"graph_snapshots":[{"event_id":"sha256:87c83fa6e9f6ab62d929b79188a4dc8172be00ab9f7766513dc52f20a165b8da","target":"graph","created_at":"2026-05-18T03:25:33Z","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 well known that classical information can be cloned, but non-orthogonal quantum states cannot be cloned, and non-commuting quantum states cannot be broadcast. We conceive a scenario in which the object we want to broadcast is the statistical distinguishability, as quantified by quantum Fisher information, about a signal parameter encoded in quantum states. We show that quantum Fisher information cannot be cloned, whilst it might be broadcast even when the input states are non-commuting. This situation interpolates between cloning of classical information and no-broadcasting of quantum in","authors_text":"C. H. Oh, Shunlong Luo, Xiaoguang Wang, Xiao-Ming Lu, Zhe Sun","cross_cats":["math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T14:33:14Z","title":"Broadcasting Quantum Fisher Information"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.2821","kind":"arxiv","version":3},"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:c9eabb337b987bc4236a59512d486c304d0605e7d4aa8161775b5f5e46be621a","target":"record","created_at":"2026-05-18T03:25:33Z","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":"4774a48da7502b51565254b22e345cd03bfb8756e95fd8ac345f8ec85bb6f353","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-06-13T14:33:14Z","title_canon_sha256":"3dbe28c7cc3fdf970d8eb3832458b3338b84eefa799da8952ab2c95a5df9446c"},"schema_version":"1.0","source":{"id":"1206.2821","kind":"arxiv","version":3}},"canonical_sha256":"f03c905a2d85bfc694610da84b0a37646bd96b86937ce4944a1a36e497d64f62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f03c905a2d85bfc694610da84b0a37646bd96b86937ce4944a1a36e497d64f62","first_computed_at":"2026-05-18T03:25:33.463262Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:25:33.463262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NeYEzoO2XmzvBb0Fo7RaAwGvW0oIqD64H13Jbg6YfSxrVL+S9k/9lCtD2qjVRE5CwQKeCHSonzOmGjWhBZnDAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:25:33.463897Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.2821","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9eabb337b987bc4236a59512d486c304d0605e7d4aa8161775b5f5e46be621a","sha256:87c83fa6e9f6ab62d929b79188a4dc8172be00ab9f7766513dc52f20a165b8da"],"state_sha256":"82531d1e779b1721980ed5255b2247d0dda7a9f44a03885885672d884e740ec6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rnv5dSFSWNY8epznNyj5/zrSwsjC2FXsv7A3TeUvKqmnTJjDspe/SuHQt9IcoJe9m2VlsD/ZI0XHupKCHwtPCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T19:34:11.924591Z","bundle_sha256":"20afa311e3e54de9ed394ac50abb5a4b7a49538c5b83d472865e815a40022ddd"}}