{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:3BEHEKIDZO7ZLI24RDORZSYXOH","short_pith_number":"pith:3BEHEKID","canonical_record":{"source":{"id":"1207.6035","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-25T15:57:37Z","cross_cats_sorted":[],"title_canon_sha256":"a7aa233ee9f6bab766aaabdab20d49a56727915d63408f15a6ea9a7791c69f08","abstract_canon_sha256":"bb88d37ebd924037bce85b4cec6479da6b8b18eab2e7349e01b6ebdc7a6270e3"},"schema_version":"1.0"},"canonical_sha256":"d848722903cbbf95a35c88dd1ccb1771cf21717283bbe418a12208ca7764b325","source":{"kind":"arxiv","id":"1207.6035","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.6035","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1207.6035v2","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.6035","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"3BEHEKIDZO7Z","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3BEHEKIDZO7ZLI24","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3BEHEKID","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:3BEHEKIDZO7ZLI24RDORZSYXOH","target":"record","payload":{"canonical_record":{"source":{"id":"1207.6035","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-25T15:57:37Z","cross_cats_sorted":[],"title_canon_sha256":"a7aa233ee9f6bab766aaabdab20d49a56727915d63408f15a6ea9a7791c69f08","abstract_canon_sha256":"bb88d37ebd924037bce85b4cec6479da6b8b18eab2e7349e01b6ebdc7a6270e3"},"schema_version":"1.0"},"canonical_sha256":"d848722903cbbf95a35c88dd1ccb1771cf21717283bbe418a12208ca7764b325","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:38:32.820251Z","signature_b64":"7GXuohEf0RrHI/xRbGwcaZLqj2zyleApPfTR35mTOmmydtoIerhlo7HN2V4QQFp5cc4kgdkiq6SXstUr/KsEAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d848722903cbbf95a35c88dd1ccb1771cf21717283bbe418a12208ca7764b325","last_reissued_at":"2026-05-18T03:38:32.819787Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:38:32.819787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.6035","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":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2zVr760Hx9bRWvZxGNaecfF5PW9RgNf7IRJ7SikihnFjYV4n6ATtTotiYhAkw4OALc0edjIHqRvkZmTDrv6sDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:15:16.743722Z"},"content_sha256":"8c66a43b9bc4cccf57f8de1c2b4a7fdcd0f87425d89e598583d336055758a041","schema_version":"1.0","event_id":"sha256:8c66a43b9bc4cccf57f8de1c2b4a7fdcd0f87425d89e598583d336055758a041"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:3BEHEKIDZO7ZLI24RDORZSYXOH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental scheme for qubit and qutrit symmetric informationally complete positive operator-valued measurements using multiport devices","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Gelo Noel M. Tabia","submitted_at":"2012-07-25T15:57:37Z","abstract_excerpt":"It is crucial for various quantum information processing tasks that the state of a quantum system can be determined reliably and efficiently from general quantum measurements. One important class of measurements for this purpose is symmetric informationally complete positive operator-valued measurements (SIC-POVMs). SIC-POVMs have the advantage of providing an unbiased estimator for the quantum state with the minimal number of outcomes needed for full tomography. By virtue of Naimark's dilation theorem, any POVM can always be realized with a suitable coupling between the system and an auxiliar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.6035","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":"2026-05-18T03:38:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bm0fZix2jHdG0soVDMWW9aJ2Br71/vMoT6MLfyaGO58owEGh6/RdNLCP55xHM3my41vmyzBpilN9ehVjkl+GBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:15:16.744071Z"},"content_sha256":"a31bce8b85f6f03310a4f10fdb87b252565221721f6ac712c937f2df88524a36","schema_version":"1.0","event_id":"sha256:a31bce8b85f6f03310a4f10fdb87b252565221721f6ac712c937f2df88524a36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/bundle.json","state_url":"https://pith.science/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/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":"2026-06-03T06:15:16Z","links":{"resolver":"https://pith.science/pith/3BEHEKIDZO7ZLI24RDORZSYXOH","bundle":"https://pith.science/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/bundle.json","state":"https://pith.science/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3BEHEKIDZO7ZLI24RDORZSYXOH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:3BEHEKIDZO7ZLI24RDORZSYXOH","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":"bb88d37ebd924037bce85b4cec6479da6b8b18eab2e7349e01b6ebdc7a6270e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-25T15:57:37Z","title_canon_sha256":"a7aa233ee9f6bab766aaabdab20d49a56727915d63408f15a6ea9a7791c69f08"},"schema_version":"1.0","source":{"id":"1207.6035","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.6035","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"arxiv_version","alias_value":"1207.6035v2","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.6035","created_at":"2026-05-18T03:38:32Z"},{"alias_kind":"pith_short_12","alias_value":"3BEHEKIDZO7Z","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"3BEHEKIDZO7ZLI24","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"3BEHEKID","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:a31bce8b85f6f03310a4f10fdb87b252565221721f6ac712c937f2df88524a36","target":"graph","created_at":"2026-05-18T03:38:32Z","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 crucial for various quantum information processing tasks that the state of a quantum system can be determined reliably and efficiently from general quantum measurements. One important class of measurements for this purpose is symmetric informationally complete positive operator-valued measurements (SIC-POVMs). SIC-POVMs have the advantage of providing an unbiased estimator for the quantum state with the minimal number of outcomes needed for full tomography. By virtue of Naimark's dilation theorem, any POVM can always be realized with a suitable coupling between the system and an auxiliar","authors_text":"Gelo Noel M. Tabia","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-25T15:57:37Z","title":"Experimental scheme for qubit and qutrit symmetric informationally complete positive operator-valued measurements using multiport devices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.6035","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":"sha256:8c66a43b9bc4cccf57f8de1c2b4a7fdcd0f87425d89e598583d336055758a041","target":"record","created_at":"2026-05-18T03:38:32Z","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":"bb88d37ebd924037bce85b4cec6479da6b8b18eab2e7349e01b6ebdc7a6270e3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-25T15:57:37Z","title_canon_sha256":"a7aa233ee9f6bab766aaabdab20d49a56727915d63408f15a6ea9a7791c69f08"},"schema_version":"1.0","source":{"id":"1207.6035","kind":"arxiv","version":2}},"canonical_sha256":"d848722903cbbf95a35c88dd1ccb1771cf21717283bbe418a12208ca7764b325","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d848722903cbbf95a35c88dd1ccb1771cf21717283bbe418a12208ca7764b325","first_computed_at":"2026-05-18T03:38:32.819787Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:38:32.819787Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7GXuohEf0RrHI/xRbGwcaZLqj2zyleApPfTR35mTOmmydtoIerhlo7HN2V4QQFp5cc4kgdkiq6SXstUr/KsEAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:38:32.820251Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.6035","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8c66a43b9bc4cccf57f8de1c2b4a7fdcd0f87425d89e598583d336055758a041","sha256:a31bce8b85f6f03310a4f10fdb87b252565221721f6ac712c937f2df88524a36"],"state_sha256":"f0d4885daa556ca304b926cf7baad1cedf3af316aa8dec141fa272f27c0d36c1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zj4G4lKf+T598lrUz0XjfH2CZ5tXS8YTvBYbt+T2H5mYWVUzKaA3olwhNjjz2bYcPjt1JQXLLqWlm5ouEz7wBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T06:15:16.746934Z","bundle_sha256":"d0e399dbd2de9b2404a1ee1ec1a729d9f1856746245b47157ec484c584dc6cd5"}}