{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:LY4SOHP5USVXOOLAYZZ2UJHWWR","short_pith_number":"pith:LY4SOHP5","canonical_record":{"source":{"id":"1909.05880","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-12T18:01:00Z","cross_cats_sorted":[],"title_canon_sha256":"a6bd5ee8093673cf5ff349a11308be96e438ba73852e20fd966c2fcec533d774","abstract_canon_sha256":"4fd7fdef38774495a491b88f62a0143e8ca75427d12ca9ac694ac1396afbaada"},"schema_version":"1.0"},"canonical_sha256":"5e39271dfda4ab773960c673aa24f6b476927db6e5e5f9c46998133c4585845d","source":{"kind":"arxiv","id":"1909.05880","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.05880","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"arxiv_version","alias_value":"1909.05880v3","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.05880","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_12","alias_value":"LY4SOHP5USVX","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_16","alias_value":"LY4SOHP5USVXOOLA","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_8","alias_value":"LY4SOHP5","created_at":"2026-07-05T01:09:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:LY4SOHP5USVXOOLAYZZ2UJHWWR","target":"record","payload":{"canonical_record":{"source":{"id":"1909.05880","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-12T18:01:00Z","cross_cats_sorted":[],"title_canon_sha256":"a6bd5ee8093673cf5ff349a11308be96e438ba73852e20fd966c2fcec533d774","abstract_canon_sha256":"4fd7fdef38774495a491b88f62a0143e8ca75427d12ca9ac694ac1396afbaada"},"schema_version":"1.0"},"canonical_sha256":"5e39271dfda4ab773960c673aa24f6b476927db6e5e5f9c46998133c4585845d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:09:27.913041Z","signature_b64":"crEm5csXBpl3OqYlUO453T0lASqtoIwJ+8LPNFQz5eVVQwKfSkHKhlpmbL+yJMK/fN5M6evvdt3GA3jZCVF5Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e39271dfda4ab773960c673aa24f6b476927db6e5e5f9c46998133c4585845d","last_reissued_at":"2026-07-05T01:09:27.912582Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:09:27.912582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1909.05880","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":"2026-07-05T01:09:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ioizyq1oN4xLHRfvW061YBnSJSmRV9+CBmsFhMYjyc5bCfP7fBtW2zSUWDNJJR13Y62EjpZNCu5JZUcBi/76Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T09:16:44.739480Z"},"content_sha256":"727e5d6a371a240a6a36b1cada1c9e487a5951fd4e967004ea7590c282d2035d","schema_version":"1.0","event_id":"sha256:727e5d6a371a240a6a36b1cada1c9e487a5951fd4e967004ea7590c282d2035d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:LY4SOHP5USVXOOLAYZZ2UJHWWR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Selective Quantum State Tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Borivoje Daki\\'c, Joshua Morris","submitted_at":"2019-09-12T18:01:00Z","abstract_excerpt":"We introduce the concept of selective quantum state tomography or SQST, a tomographic scheme that enables a user to estimate arbitrary elements of an unknown quantum state using a fixed measurement record. We demonstrate how this may be done with the following notable advantages (i) a number of state copies that depends only on the desired precision of the estimation, rather than the dimension of the unknown state; (ii) a similar reduction in the requisite classical memory and computational cost; (iii) an approach to state tomography using $O(\\epsilon^{-2}\\log d)$ state copies for maximum norm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.05880","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1909.05880/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:09:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3gbP9Oyp5XpcRoDEUIOD2WclJpKjlycEhz/AuX8uuJ9W2VlVgdAuQ5U9mQarPLsehTQv6RxHRNZHcC/JqtGyBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T09:16:44.740314Z"},"content_sha256":"d313408afcd1239ce90393e0a539caae03c405a425a4d9b4b0b1328131504f00","schema_version":"1.0","event_id":"sha256:d313408afcd1239ce90393e0a539caae03c405a425a4d9b4b0b1328131504f00"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/bundle.json","state_url":"https://pith.science/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/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":"2026-08-22T09:16:44Z","links":{"resolver":"https://pith.science/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR","bundle":"https://pith.science/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/bundle.json","state":"https://pith.science/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LY4SOHP5USVXOOLAYZZ2UJHWWR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LY4SOHP5USVXOOLAYZZ2UJHWWR","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":"4fd7fdef38774495a491b88f62a0143e8ca75427d12ca9ac694ac1396afbaada","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-12T18:01:00Z","title_canon_sha256":"a6bd5ee8093673cf5ff349a11308be96e438ba73852e20fd966c2fcec533d774"},"schema_version":"1.0","source":{"id":"1909.05880","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1909.05880","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"arxiv_version","alias_value":"1909.05880v3","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.05880","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_12","alias_value":"LY4SOHP5USVX","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_16","alias_value":"LY4SOHP5USVXOOLA","created_at":"2026-07-05T01:09:27Z"},{"alias_kind":"pith_short_8","alias_value":"LY4SOHP5","created_at":"2026-07-05T01:09:27Z"}],"graph_snapshots":[{"event_id":"sha256:d313408afcd1239ce90393e0a539caae03c405a425a4d9b4b0b1328131504f00","target":"graph","created_at":"2026-07-05T01:09:27Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1909.05880/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We introduce the concept of selective quantum state tomography or SQST, a tomographic scheme that enables a user to estimate arbitrary elements of an unknown quantum state using a fixed measurement record. We demonstrate how this may be done with the following notable advantages (i) a number of state copies that depends only on the desired precision of the estimation, rather than the dimension of the unknown state; (ii) a similar reduction in the requisite classical memory and computational cost; (iii) an approach to state tomography using $O(\\epsilon^{-2}\\log d)$ state copies for maximum norm","authors_text":"Borivoje Daki\\'c, Joshua Morris","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-12T18:01:00Z","title":"Selective Quantum State Tomography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.05880","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":"sha256:727e5d6a371a240a6a36b1cada1c9e487a5951fd4e967004ea7590c282d2035d","target":"record","created_at":"2026-07-05T01:09:27Z","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":"4fd7fdef38774495a491b88f62a0143e8ca75427d12ca9ac694ac1396afbaada","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-09-12T18:01:00Z","title_canon_sha256":"a6bd5ee8093673cf5ff349a11308be96e438ba73852e20fd966c2fcec533d774"},"schema_version":"1.0","source":{"id":"1909.05880","kind":"arxiv","version":3}},"canonical_sha256":"5e39271dfda4ab773960c673aa24f6b476927db6e5e5f9c46998133c4585845d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e39271dfda4ab773960c673aa24f6b476927db6e5e5f9c46998133c4585845d","first_computed_at":"2026-07-05T01:09:27.912582Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:09:27.912582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"crEm5csXBpl3OqYlUO453T0lASqtoIwJ+8LPNFQz5eVVQwKfSkHKhlpmbL+yJMK/fN5M6evvdt3GA3jZCVF5Dw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:09:27.913041Z","signed_message":"canonical_sha256_bytes"},"source_id":"1909.05880","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:727e5d6a371a240a6a36b1cada1c9e487a5951fd4e967004ea7590c282d2035d","sha256:d313408afcd1239ce90393e0a539caae03c405a425a4d9b4b0b1328131504f00"],"state_sha256":"6b7631e378f409fde1a6ca7160b5cb58bafee8ccea79f94b5d8f7fba6b0f0726"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RXzPQ2nTUO+EMvmWfZFV2l3vCKRbbM431FsQkXTnxEfWkQSpwmihBb0sexPQu1H8EDy9hClS5TJM2bbDrC/hCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T09:16:44.747262Z","bundle_sha256":"3375442c6f4a89a9cf5b397b4e160064ab5560fbe8c4bfcf1502f1bbb315bb96"}}