{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ZHCWTAXQ6KBMX446HW25MPPYVF","short_pith_number":"pith:ZHCWTAXQ","canonical_record":{"source":{"id":"1208.0519","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-02T15:45:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"bcf6d268edcc0fc0bd09b535e867aa554115233d96969d3075e2e025aca4ace4","abstract_canon_sha256":"30f8c3812825a511036aefc648683cc4479ba95c90c56731716374422c8b11de"},"schema_version":"1.0"},"canonical_sha256":"c9c56982f0f282cbf39e3db5d63df8a94b665882afb84e97b5bf2b0444de2d7a","source":{"kind":"arxiv","id":"1208.0519","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0519","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0519v3","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0519","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZHCWTAXQ6KBM","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZHCWTAXQ6KBMX446","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZHCWTAXQ","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ZHCWTAXQ6KBMX446HW25MPPYVF","target":"record","payload":{"canonical_record":{"source":{"id":"1208.0519","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-02T15:45:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"bcf6d268edcc0fc0bd09b535e867aa554115233d96969d3075e2e025aca4ace4","abstract_canon_sha256":"30f8c3812825a511036aefc648683cc4479ba95c90c56731716374422c8b11de"},"schema_version":"1.0"},"canonical_sha256":"c9c56982f0f282cbf39e3db5d63df8a94b665882afb84e97b5bf2b0444de2d7a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:06.437663Z","signature_b64":"RktzzJSogb/gsAb4Lmy3ZnC0NGuvBniKnG3K97p2knEJiEJ/WtwrD29QpUY1TUCHBK7uoTfHZ8K8ax3u0GyQDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c9c56982f0f282cbf39e3db5d63df8a94b665882afb84e97b5bf2b0444de2d7a","last_reissued_at":"2026-05-18T03:16:06.437214Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:06.437214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.0519","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":"2026-05-18T03:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCBUM5E1y27wBHOc1wlpDBoGZS3Ma9R0lmDPRHzTGeuMing3FUla1m1VzV0e6ubuDrCofxwGgbvS1wJLXnKgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T17:50:20.717605Z"},"content_sha256":"7f932728dbb64f5df927836cb4f722ff83cdd670b5cd2030b10ab0ae8dffcfa9","schema_version":"1.0","event_id":"sha256:7f932728dbb64f5df927836cb4f722ff83cdd670b5cd2030b10ab0ae8dffcfa9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ZHCWTAXQ6KBMX446HW25MPPYVF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coherent Quantum Oscillations in a Silicon Charge Qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"C. B. Simmons, Daniel. R. Ward, D. E. Savage, John King Gamble, J. R. Prance, M. A. Eriksson, Mark Friesen, M. G. Lagally, R. T. Mohr, S. N. Coppersmith, Teck Seng Koh, Xian. Wu, Zhan Shi","submitted_at":"2012-08-02T15:45:38Z","abstract_excerpt":"Fast quantum oscillations of a charge qubit in a double quantum dot fabricated in a Si/SiGe heterostructure are demonstrated and characterized experimentally. The measured inhomogeneous dephasing time T2* ranges from 127ps to ~2.1ns; it depends substantially on how the energy difference of the two qubit states varies with external voltages, consistent with a decoherence process that is dominated by detuning noise(charge noise that changes the asymmetry of the qubit's double-well potential). In the regime with the shortest T2*, applying a charge-echo pulse sequence increases the measured inhomo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0519","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oT8MgmJIhGcII99av2dlmbNqURhxQqvdEBua2OfBQkaQzdapJP4Xs2OIoyDomdYbU/yusP7Rxlm6LaC1ydlRBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T17:50:20.718233Z"},"content_sha256":"0c8925d6a69e3e0178ef1256923e1dded53772e2fed885c2a77a180d7795a136","schema_version":"1.0","event_id":"sha256:0c8925d6a69e3e0178ef1256923e1dded53772e2fed885c2a77a180d7795a136"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/bundle.json","state_url":"https://pith.science/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/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":"2026-05-19T17:50:20Z","links":{"resolver":"https://pith.science/pith/ZHCWTAXQ6KBMX446HW25MPPYVF","bundle":"https://pith.science/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/bundle.json","state":"https://pith.science/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZHCWTAXQ6KBMX446HW25MPPYVF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ZHCWTAXQ6KBMX446HW25MPPYVF","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":"30f8c3812825a511036aefc648683cc4479ba95c90c56731716374422c8b11de","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-02T15:45:38Z","title_canon_sha256":"bcf6d268edcc0fc0bd09b535e867aa554115233d96969d3075e2e025aca4ace4"},"schema_version":"1.0","source":{"id":"1208.0519","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0519","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0519v3","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0519","created_at":"2026-05-18T03:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"ZHCWTAXQ6KBM","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"ZHCWTAXQ6KBMX446","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"ZHCWTAXQ","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:0c8925d6a69e3e0178ef1256923e1dded53772e2fed885c2a77a180d7795a136","target":"graph","created_at":"2026-05-18T03:16:06Z","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":"Fast quantum oscillations of a charge qubit in a double quantum dot fabricated in a Si/SiGe heterostructure are demonstrated and characterized experimentally. The measured inhomogeneous dephasing time T2* ranges from 127ps to ~2.1ns; it depends substantially on how the energy difference of the two qubit states varies with external voltages, consistent with a decoherence process that is dominated by detuning noise(charge noise that changes the asymmetry of the qubit's double-well potential). In the regime with the shortest T2*, applying a charge-echo pulse sequence increases the measured inhomo","authors_text":"C. B. Simmons, Daniel. R. Ward, D. E. Savage, John King Gamble, J. R. Prance, M. A. Eriksson, Mark Friesen, M. G. Lagally, R. T. Mohr, S. N. Coppersmith, Teck Seng Koh, Xian. Wu, Zhan Shi","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-02T15:45:38Z","title":"Coherent Quantum Oscillations in a Silicon Charge Qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0519","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":"sha256:7f932728dbb64f5df927836cb4f722ff83cdd670b5cd2030b10ab0ae8dffcfa9","target":"record","created_at":"2026-05-18T03:16:06Z","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":"30f8c3812825a511036aefc648683cc4479ba95c90c56731716374422c8b11de","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-08-02T15:45:38Z","title_canon_sha256":"bcf6d268edcc0fc0bd09b535e867aa554115233d96969d3075e2e025aca4ace4"},"schema_version":"1.0","source":{"id":"1208.0519","kind":"arxiv","version":3}},"canonical_sha256":"c9c56982f0f282cbf39e3db5d63df8a94b665882afb84e97b5bf2b0444de2d7a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9c56982f0f282cbf39e3db5d63df8a94b665882afb84e97b5bf2b0444de2d7a","first_computed_at":"2026-05-18T03:16:06.437214Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:16:06.437214Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RktzzJSogb/gsAb4Lmy3ZnC0NGuvBniKnG3K97p2knEJiEJ/WtwrD29QpUY1TUCHBK7uoTfHZ8K8ax3u0GyQDA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:16:06.437663Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0519","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f932728dbb64f5df927836cb4f722ff83cdd670b5cd2030b10ab0ae8dffcfa9","sha256:0c8925d6a69e3e0178ef1256923e1dded53772e2fed885c2a77a180d7795a136"],"state_sha256":"b7ed0aba72d75e7d735a4d50d7a8bac091d119d58ff87d77436ad30877c1ab46"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"79aPRdllVJhuxfoL8pQrRMM2N9IX4HqDeK8VvwpD3mVPXMo1cXfFw2U3PGyYRU4EuaLnKvakRv69lVe5RTYpCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T17:50:20.721681Z","bundle_sha256":"6391113e093f25d6fe71a61998932432569c9e5fb07e7639d57137ec2a0a97fc"}}