{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:6H52HWVH2Y4ET7NOPAFUTVEIM5","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":"10c6edb6bee013dcae588f0ecc9e3a48d7b6b235a64e476ba34698ff07515c11","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2004-02-25T11:25:46Z","title_canon_sha256":"bb8189a15db31438c7125e4591896c8bd8d13fe220f8dad44b0f1ffd3edebe50"},"schema_version":"1.0","source":{"id":"cond-mat/0402619","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0402619","created_at":"2026-07-04T16:45:50Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0402619v1","created_at":"2026-07-04T16:45:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0402619","created_at":"2026-07-04T16:45:50Z"},{"alias_kind":"pith_short_12","alias_value":"6H52HWVH2Y4E","created_at":"2026-07-04T16:45:50Z"},{"alias_kind":"pith_short_16","alias_value":"6H52HWVH2Y4ET7NO","created_at":"2026-07-04T16:45:50Z"},{"alias_kind":"pith_short_8","alias_value":"6H52HWVH","created_at":"2026-07-04T16:45:50Z"}],"graph_snapshots":[{"event_id":"sha256:92750a92055d0957a13fcec61a1d40672b219cf7facc5bf7b904822ea0f947a1","target":"graph","created_at":"2026-07-04T16:45:50Z","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/cond-mat/0402619/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate single-shot readout of quantum states of the Josephson charge qubit. The quantum bits are transformed into and stored as classical bits (charge quanta) in a dynamic memory cell - a superconducting island. The transformation of state |1> (differing form state |0> by an extra Cooper pair) is a result of a controllable quasiparticle tunneling to the island. The charge is then detected by a conventional single-electron transistor, electrostatically decoupled from the qubit. We study relaxation dynamics in the system and obtain the readout efficiency of 87% and 93% for |1> and |0> st","authors_text":"J. S. Tsai, O. Astafiev, T. Yamamoto, Y. Nakamura, Yu. A. Pashkin","cross_cats":["cond-mat.supr-con"],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2004-02-25T11:25:46Z","title":"Single-shot measurement of the Josephson charge qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0402619","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":"sha256:4068bdba13973ef6289b6299151de12a66a1c029882aa797189daa820f69de80","target":"record","created_at":"2026-07-04T16:45:50Z","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":"10c6edb6bee013dcae588f0ecc9e3a48d7b6b235a64e476ba34698ff07515c11","cross_cats_sorted":["cond-mat.supr-con"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2004-02-25T11:25:46Z","title_canon_sha256":"bb8189a15db31438c7125e4591896c8bd8d13fe220f8dad44b0f1ffd3edebe50"},"schema_version":"1.0","source":{"id":"cond-mat/0402619","kind":"arxiv","version":1}},"canonical_sha256":"f1fba3daa7d63849fdae780b49d488677ee15da064f2551eb12fef1967984f90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f1fba3daa7d63849fdae780b49d488677ee15da064f2551eb12fef1967984f90","first_computed_at":"2026-07-04T16:45:50.582537Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:45:50.582537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cU/nij2/eTyAH336QJH2szjZgwV4uPTXYTwYx+2x+8jPmFycZjRICjEC78XnZYuX1H8NdMhW+//xXtkPtXsYDw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:45:50.582946Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0402619","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4068bdba13973ef6289b6299151de12a66a1c029882aa797189daa820f69de80","sha256:92750a92055d0957a13fcec61a1d40672b219cf7facc5bf7b904822ea0f947a1"],"state_sha256":"82eaa78d84732f2ba83bf4a286b6e12ebf66a80bbb849ca0e936166092a2bb8f"}