{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:5IUZCSYVAB6LENPVNTAMXFSAGG","short_pith_number":"pith:5IUZCSYV","canonical_record":{"source":{"id":"1405.0485","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-02T19:59:07Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"a39693566633ecfa0ab2b6237f6c7d5d5f549521d927f752f2044c56f2eaa6cd","abstract_canon_sha256":"4cf9ec51b3824c5b25fea418a3330f287f4432ee24726cd0dbf038d34612cdba"},"schema_version":"1.0"},"canonical_sha256":"ea29914b15007cb235f56cc0cb964031b73617cfd8fc4830c4a438fc1939a938","source":{"kind":"arxiv","id":"1405.0485","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0485","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0485v1","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0485","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"pith_short_12","alias_value":"5IUZCSYVAB6L","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5IUZCSYVAB6LENPV","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5IUZCSYV","created_at":"2026-05-18T12:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:5IUZCSYVAB6LENPVNTAMXFSAGG","target":"record","payload":{"canonical_record":{"source":{"id":"1405.0485","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-02T19:59:07Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"a39693566633ecfa0ab2b6237f6c7d5d5f549521d927f752f2044c56f2eaa6cd","abstract_canon_sha256":"4cf9ec51b3824c5b25fea418a3330f287f4432ee24726cd0dbf038d34612cdba"},"schema_version":"1.0"},"canonical_sha256":"ea29914b15007cb235f56cc0cb964031b73617cfd8fc4830c4a438fc1939a938","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:18.254678Z","signature_b64":"Ce0mRpPEBqy3snhdMOJFYESVkt4X9CjSz/w3tyxt/NUp0i0T4Z8LyJxDFuXcqNidIoIkWuJgBB62bNY7GPAIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea29914b15007cb235f56cc0cb964031b73617cfd8fc4830c4a438fc1939a938","last_reissued_at":"2026-05-18T02:40:18.254175Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:18.254175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.0485","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:40:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BVONmhFVQoPaG5kVeA1O7fFcwy7/ZuKfJAXfnOFkxPgvqo0yi21L1nTxkfumOyrzSMmHBRs/8K//h6VB5tLaBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T11:27:56.860071Z"},"content_sha256":"081ed6151608323bf5b4f32b4f4ca88bd812234700cc976ee9ebd11740aa8426","schema_version":"1.0","event_id":"sha256:081ed6151608323bf5b4f32b4f4ca88bd812234700cc976ee9ebd11740aa8426"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:5IUZCSYVAB6LENPVNTAMXFSAGG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Suppressing qubit dephasing using real-time Hamiltonian estimation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Amir Yacoby, Andrew C. Doherty, John M. Nichol, Michael D. Shulman, Shannon P. Harvey, Stephen D. Bartlett, Vladimir Umansky","submitted_at":"2014-05-02T19:59:07Z","abstract_excerpt":"Unwanted interaction between a quantum system and its fluctuating environment leads to decoherence and is the primary obstacle to establishing a scalable quantum information processing architecture. Strategies such as environmental and materials engineering, quantum error correction and dynamical decoupling can mitigate decoherence, but generally increase experimental complexity. Here we improve coherence in a qubit using real-time Hamiltonian parameter estimation. Using a rapidly converging Bayesian approach, we precisely measure the splitting in a singlet-triplet spin qubit faster than the s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0485","kind":"arxiv","version":1},"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":"2026-05-18T02:40:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KZjeLQ2eS3OcQLc/6jxkIKEym1U02utErLBy1+2T9GWX+1w6Fyf6onYWbXr1vG9wp/fNMu85ETQo9RMi680aAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T11:27:56.860727Z"},"content_sha256":"f4ae4d56ed1f1abdcf7458faaf11301b574ae7730688269ea6d795e1c0ac2830","schema_version":"1.0","event_id":"sha256:f4ae4d56ed1f1abdcf7458faaf11301b574ae7730688269ea6d795e1c0ac2830"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/bundle.json","state_url":"https://pith.science/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/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":"2026-05-19T11:27:56Z","links":{"resolver":"https://pith.science/pith/5IUZCSYVAB6LENPVNTAMXFSAGG","bundle":"https://pith.science/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/bundle.json","state":"https://pith.science/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5IUZCSYVAB6LENPVNTAMXFSAGG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:5IUZCSYVAB6LENPVNTAMXFSAGG","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":"4cf9ec51b3824c5b25fea418a3330f287f4432ee24726cd0dbf038d34612cdba","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-02T19:59:07Z","title_canon_sha256":"a39693566633ecfa0ab2b6237f6c7d5d5f549521d927f752f2044c56f2eaa6cd"},"schema_version":"1.0","source":{"id":"1405.0485","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.0485","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"arxiv_version","alias_value":"1405.0485v1","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.0485","created_at":"2026-05-18T02:40:18Z"},{"alias_kind":"pith_short_12","alias_value":"5IUZCSYVAB6L","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5IUZCSYVAB6LENPV","created_at":"2026-05-18T12:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5IUZCSYV","created_at":"2026-05-18T12:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:f4ae4d56ed1f1abdcf7458faaf11301b574ae7730688269ea6d795e1c0ac2830","target":"graph","created_at":"2026-05-18T02:40:18Z","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":"Unwanted interaction between a quantum system and its fluctuating environment leads to decoherence and is the primary obstacle to establishing a scalable quantum information processing architecture. Strategies such as environmental and materials engineering, quantum error correction and dynamical decoupling can mitigate decoherence, but generally increase experimental complexity. Here we improve coherence in a qubit using real-time Hamiltonian parameter estimation. Using a rapidly converging Bayesian approach, we precisely measure the splitting in a singlet-triplet spin qubit faster than the s","authors_text":"Amir Yacoby, Andrew C. Doherty, John M. Nichol, Michael D. Shulman, Shannon P. Harvey, Stephen D. Bartlett, Vladimir Umansky","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-02T19:59:07Z","title":"Suppressing qubit dephasing using real-time Hamiltonian estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.0485","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":"sha256:081ed6151608323bf5b4f32b4f4ca88bd812234700cc976ee9ebd11740aa8426","target":"record","created_at":"2026-05-18T02:40:18Z","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":"4cf9ec51b3824c5b25fea418a3330f287f4432ee24726cd0dbf038d34612cdba","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-05-02T19:59:07Z","title_canon_sha256":"a39693566633ecfa0ab2b6237f6c7d5d5f549521d927f752f2044c56f2eaa6cd"},"schema_version":"1.0","source":{"id":"1405.0485","kind":"arxiv","version":1}},"canonical_sha256":"ea29914b15007cb235f56cc0cb964031b73617cfd8fc4830c4a438fc1939a938","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea29914b15007cb235f56cc0cb964031b73617cfd8fc4830c4a438fc1939a938","first_computed_at":"2026-05-18T02:40:18.254175Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:18.254175Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ce0mRpPEBqy3snhdMOJFYESVkt4X9CjSz/w3tyxt/NUp0i0T4Z8LyJxDFuXcqNidIoIkWuJgBB62bNY7GPAIAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:18.254678Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.0485","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:081ed6151608323bf5b4f32b4f4ca88bd812234700cc976ee9ebd11740aa8426","sha256:f4ae4d56ed1f1abdcf7458faaf11301b574ae7730688269ea6d795e1c0ac2830"],"state_sha256":"a2f0367e7552511f7e314b24bebff92375d32018831f42ec57815f910d3abdc6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"whlAKBPeGS7wz8Bi8e2gVvBOeRqVLh5WMjLmtRK0xtFPPu1nMu20u8mBxNrPAkkkuNrEfBfpDF6ogFb5VNQ/Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T11:27:56.863482Z","bundle_sha256":"c43532101044ad63fd391730d59adfc28599a32969d33baa64ab86bc4822db1d"}}