{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:HKLULNLFUGKZDCA2BWKBKBLQ5M","short_pith_number":"pith:HKLULNLF","schema_version":"1.0","canonical_sha256":"3a9745b565a19591881a0d94150570eb11bf65c7ef5712a22d72501dc43fed61","source":{"kind":"arxiv","id":"0708.1918","version":3},"attestation_state":"computed","paper":{"title":"Quantum state tomography using a single apparatus","license":"","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"quant-ph","authors_text":"A. E. Allahverdyan, B. Mehmani, Th. M. Nieuwenhuizen","submitted_at":"2007-08-14T15:45:03Z","abstract_excerpt":"The density matrix of a two-level system (spin, atom) is usually determined by measuring the three non-commuting components of the Pauli vector. This density matrix can also be obtained via the measurement data of two commuting variables, using a single apparatus. This is done by coupling the two-level system to a mode of radiation field, where the atom-field interaction is described with the Jaynes--Cummings model. The mode starts its evolution from a known coherent state. The unknown initial state of the atom is found by measuring two commuting observables: the population difference of the a"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0708.1918","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2007-08-14T15:45:03Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"5f25acbbb142fa205dbe5985ec08b8dcb251a6aaa14413a6b2d05b042fb34efa","abstract_canon_sha256":"69d313ef53f7e0bd6dbfaa752d45659f1a38483d1eab952e292e848883ce9745"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:01.896193Z","signature_b64":"GHkzLsqg/CQMw5T81uYdrMBTA/TBYR07CnPwlauV2gjT98WsD/ywk9vaFwTwqxNuR6XPI9eUH6D6Dw37iRSaAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3a9745b565a19591881a0d94150570eb11bf65c7ef5712a22d72501dc43fed61","last_reissued_at":"2026-05-18T03:55:01.895582Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:01.895582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum state tomography using a single apparatus","license":"","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"quant-ph","authors_text":"A. E. Allahverdyan, B. Mehmani, Th. M. Nieuwenhuizen","submitted_at":"2007-08-14T15:45:03Z","abstract_excerpt":"The density matrix of a two-level system (spin, atom) is usually determined by measuring the three non-commuting components of the Pauli vector. This density matrix can also be obtained via the measurement data of two commuting variables, using a single apparatus. This is done by coupling the two-level system to a mode of radiation field, where the atom-field interaction is described with the Jaynes--Cummings model. The mode starts its evolution from a known coherent state. The unknown initial state of the atom is found by measuring two commuting observables: the population difference of the a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0708.1918","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0708.1918","created_at":"2026-05-18T03:55:01.895666+00:00"},{"alias_kind":"arxiv_version","alias_value":"0708.1918v3","created_at":"2026-05-18T03:55:01.895666+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0708.1918","created_at":"2026-05-18T03:55:01.895666+00:00"},{"alias_kind":"pith_short_12","alias_value":"HKLULNLFUGKZ","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_16","alias_value":"HKLULNLFUGKZDCA2","created_at":"2026-05-18T12:25:55.427421+00:00"},{"alias_kind":"pith_short_8","alias_value":"HKLULNLF","created_at":"2026-05-18T12:25:55.427421+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M","json":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M.json","graph_json":"https://pith.science/api/pith-number/HKLULNLFUGKZDCA2BWKBKBLQ5M/graph.json","events_json":"https://pith.science/api/pith-number/HKLULNLFUGKZDCA2BWKBKBLQ5M/events.json","paper":"https://pith.science/paper/HKLULNLF"},"agent_actions":{"view_html":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M","download_json":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M.json","view_paper":"https://pith.science/paper/HKLULNLF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0708.1918&json=true","fetch_graph":"https://pith.science/api/pith-number/HKLULNLFUGKZDCA2BWKBKBLQ5M/graph.json","fetch_events":"https://pith.science/api/pith-number/HKLULNLFUGKZDCA2BWKBKBLQ5M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M/action/storage_attestation","attest_author":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M/action/author_attestation","sign_citation":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M/action/citation_signature","submit_replication":"https://pith.science/pith/HKLULNLFUGKZDCA2BWKBKBLQ5M/action/replication_record"}},"created_at":"2026-05-18T03:55:01.895666+00:00","updated_at":"2026-05-18T03:55:01.895666+00:00"}