{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZTUMEHX7WYJLADMS6HLTIJHCKT","short_pith_number":"pith:ZTUMEHX7","canonical_record":{"source":{"id":"1808.09988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-29T18:04:40Z","cross_cats_sorted":[],"title_canon_sha256":"29deba889489969c078555a13bd47f19f760950b69b220db4a57b2e5c0493e75","abstract_canon_sha256":"0d214c124ea52170d968e6e3c1bbce8810d42711d5e1746587ae0a49554eb37c"},"schema_version":"1.0"},"canonical_sha256":"cce8c21effb612b00d92f1d73424e254c8425e02cbcd6bde8ce7933d38833dda","source":{"kind":"arxiv","id":"1808.09988","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09988","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09988v1","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09988","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"pith_short_12","alias_value":"ZTUMEHX7WYJL","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZTUMEHX7WYJLADMS","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZTUMEHX7","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZTUMEHX7WYJLADMS6HLTIJHCKT","target":"record","payload":{"canonical_record":{"source":{"id":"1808.09988","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-29T18:04:40Z","cross_cats_sorted":[],"title_canon_sha256":"29deba889489969c078555a13bd47f19f760950b69b220db4a57b2e5c0493e75","abstract_canon_sha256":"0d214c124ea52170d968e6e3c1bbce8810d42711d5e1746587ae0a49554eb37c"},"schema_version":"1.0"},"canonical_sha256":"cce8c21effb612b00d92f1d73424e254c8425e02cbcd6bde8ce7933d38833dda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:45:36.954953Z","signature_b64":"MrVdU8el+FeUXB5IyMwROusI1UDtwGYYFdG5ZmnY0bQ32bQEdhILidW+QMMlnH4xMxIueTVXFgUUWYr4PhdEBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cce8c21effb612b00d92f1d73424e254c8425e02cbcd6bde8ce7933d38833dda","last_reissued_at":"2026-05-17T23:45:36.954373Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:45:36.954373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.09988","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:45:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BQqTpG+kcyyGXQRZnXRgRnBhVJ2Yk62Oqj0Q+uO4sKdb7ePD5NIQ1ey0nnohxwwZfhEeuyLDhKLypqIQrAaMAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:31:52.632123Z"},"content_sha256":"ce02d165f06bd226809794150cdd3c952538d65c491c6ef85af6cc4fc82efbb5","schema_version":"1.0","event_id":"sha256:ce02d165f06bd226809794150cdd3c952538d65c491c6ef85af6cc4fc82efbb5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZTUMEHX7WYJLADMS6HLTIJHCKT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Confidence Polytopes in Quantum State Tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jinzhao Wang, Renato Renner, Volkher B. Scholz","submitted_at":"2018-08-29T18:04:40Z","abstract_excerpt":"Quantum State Tomography is the task of inferring the state of a quantum system from measurement data. A reliable tomography scheme should not only report an estimate for that state, but also well-justified error bars. These may be specified in terms of confidence regions, i.e., subsets of the state space which contain the system's state with high probability. Here, building upon a quantum generalisation of Clopper-Pearson confidence intervals--a notion known from classical statistics--we present a simple and reliable scheme for generating confidence regions. These have the shape of a polytope"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09988","kind":"arxiv","version":1},"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":"2026-05-17T23:45:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"86HxE8YZ4kSVSDv5Gabx3XvrWGtcooaWMvZOqb23ma3zri8QmFAstaFJYfIFJM1hFCbHO4ngEiv8Koo+i/WlAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T17:31:52.632478Z"},"content_sha256":"6ad320fb645500dd28704726e89314cb0b7383b17b9d2040336e00fda798816c","schema_version":"1.0","event_id":"sha256:6ad320fb645500dd28704726e89314cb0b7383b17b9d2040336e00fda798816c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/bundle.json","state_url":"https://pith.science/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/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":"2026-06-01T17:31:52Z","links":{"resolver":"https://pith.science/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT","bundle":"https://pith.science/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/bundle.json","state":"https://pith.science/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZTUMEHX7WYJLADMS6HLTIJHCKT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZTUMEHX7WYJLADMS6HLTIJHCKT","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":"0d214c124ea52170d968e6e3c1bbce8810d42711d5e1746587ae0a49554eb37c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-29T18:04:40Z","title_canon_sha256":"29deba889489969c078555a13bd47f19f760950b69b220db4a57b2e5c0493e75"},"schema_version":"1.0","source":{"id":"1808.09988","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09988","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09988v1","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09988","created_at":"2026-05-17T23:45:36Z"},{"alias_kind":"pith_short_12","alias_value":"ZTUMEHX7WYJL","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"ZTUMEHX7WYJLADMS","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"ZTUMEHX7","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:6ad320fb645500dd28704726e89314cb0b7383b17b9d2040336e00fda798816c","target":"graph","created_at":"2026-05-17T23:45:36Z","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 State Tomography is the task of inferring the state of a quantum system from measurement data. A reliable tomography scheme should not only report an estimate for that state, but also well-justified error bars. These may be specified in terms of confidence regions, i.e., subsets of the state space which contain the system's state with high probability. Here, building upon a quantum generalisation of Clopper-Pearson confidence intervals--a notion known from classical statistics--we present a simple and reliable scheme for generating confidence regions. These have the shape of a polytope","authors_text":"Jinzhao Wang, Renato Renner, Volkher B. Scholz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-29T18:04:40Z","title":"Confidence Polytopes in Quantum State Tomography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09988","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:ce02d165f06bd226809794150cdd3c952538d65c491c6ef85af6cc4fc82efbb5","target":"record","created_at":"2026-05-17T23:45:36Z","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":"0d214c124ea52170d968e6e3c1bbce8810d42711d5e1746587ae0a49554eb37c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-29T18:04:40Z","title_canon_sha256":"29deba889489969c078555a13bd47f19f760950b69b220db4a57b2e5c0493e75"},"schema_version":"1.0","source":{"id":"1808.09988","kind":"arxiv","version":1}},"canonical_sha256":"cce8c21effb612b00d92f1d73424e254c8425e02cbcd6bde8ce7933d38833dda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cce8c21effb612b00d92f1d73424e254c8425e02cbcd6bde8ce7933d38833dda","first_computed_at":"2026-05-17T23:45:36.954373Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:45:36.954373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MrVdU8el+FeUXB5IyMwROusI1UDtwGYYFdG5ZmnY0bQ32bQEdhILidW+QMMlnH4xMxIueTVXFgUUWYr4PhdEBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:45:36.954953Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.09988","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce02d165f06bd226809794150cdd3c952538d65c491c6ef85af6cc4fc82efbb5","sha256:6ad320fb645500dd28704726e89314cb0b7383b17b9d2040336e00fda798816c"],"state_sha256":"fc4a22bb01d2e6deb03b470d325fc02e6e4915dca697e288f252b8cedfb68e05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LJJCyqnjVGwJQShT7TmGhUMPHo3fKFnR0571B7coy+tri6AxnTLrrL4UlgrKSQAr5E/2Dc7t+mZFQL6j8Y82BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T17:31:52.634396Z","bundle_sha256":"1c3182696654c5b3699ac3c202dca0114f6acd50382533c945312c8e36fd900b"}}