{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:QHJU2TO6GRU3I2QXUPRPTGXXTA","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":"4e95aaa80e621bbb977ce6abe3f7053eed8efab2a8249aacb5070e79e75a401c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-04-23T03:23:06Z","title_canon_sha256":"d706da70fe264714ad480ba20aec88e7c99e13932298de0bb5ae10b7c44442f9"},"schema_version":"1.0","source":{"id":"1004.4047","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1004.4047","created_at":"2026-05-18T02:07:54Z"},{"alias_kind":"arxiv_version","alias_value":"1004.4047v1","created_at":"2026-05-18T02:07:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1004.4047","created_at":"2026-05-18T02:07:54Z"},{"alias_kind":"pith_short_12","alias_value":"QHJU2TO6GRU3","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"QHJU2TO6GRU3I2QX","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"QHJU2TO6","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:e1e5329c729fa4db73ad4b92bc91f797defb0e6e3e71eea32e1b05eae0f01b2f","target":"graph","created_at":"2026-05-18T02:07:54Z","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":"State readout is a key requirement for a quantum computer. For semiconductor-based qubit devices it is usually accomplished using a separate mesoscopic electrometer. Here we demonstrate a simple detection scheme in which a radio-frequency resonant circuit coupled to a semiconductor double quantum dot is used to probe its charge and spin states. These results demonstrate a new non-invasive technique for measuring charge and spin states in quantum dot systems without requiring a separate mesoscopic detector.","authors_text":"C. G. Smith, D. Anderson, D. A. Ritchie, G. A. C. Jones, K. D. Petersson, P. Atkinson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-04-23T03:23:06Z","title":"Charge and spin state readout of a double quantum dot coupled to a resonator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.4047","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:f74643a7aadbd5c213015b6deced9dad8efb3dd78df719d89a504aa4279ff6a6","target":"record","created_at":"2026-05-18T02:07:54Z","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":"4e95aaa80e621bbb977ce6abe3f7053eed8efab2a8249aacb5070e79e75a401c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-04-23T03:23:06Z","title_canon_sha256":"d706da70fe264714ad480ba20aec88e7c99e13932298de0bb5ae10b7c44442f9"},"schema_version":"1.0","source":{"id":"1004.4047","kind":"arxiv","version":1}},"canonical_sha256":"81d34d4dde3469b46a17a3e2f99af7983b79c08123b33deeaccb45d7c2196b79","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"81d34d4dde3469b46a17a3e2f99af7983b79c08123b33deeaccb45d7c2196b79","first_computed_at":"2026-05-18T02:07:54.765162Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:07:54.765162Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1bheGqM5lH08AtsyKMf5kKqiN6ncHOL58z72ooA3MzXpEgN+lJ/q/NjFb2xXNQ2OI2ogyMHZinbunUEGrc5sCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:07:54.765999Z","signed_message":"canonical_sha256_bytes"},"source_id":"1004.4047","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f74643a7aadbd5c213015b6deced9dad8efb3dd78df719d89a504aa4279ff6a6","sha256:e1e5329c729fa4db73ad4b92bc91f797defb0e6e3e71eea32e1b05eae0f01b2f"],"state_sha256":"a29ed6c41d3bd1a69446baaf554fa863ddb96f933d13a22d115cb0be5a51fdbf"}