{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZSP5X7TG7IZVTHQWSACL5DHEWU","short_pith_number":"pith:ZSP5X7TG","canonical_record":{"source":{"id":"1405.7673","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-29T19:37:51Z","cross_cats_sorted":[],"title_canon_sha256":"e8581b02af51c036a12121f17a8b662c5e7443c55ced64b03de590120d05d114","abstract_canon_sha256":"16683ac4aa6b30941174eb94fac561c6bbf3d0508c8ec919234380208dfee803"},"schema_version":"1.0"},"canonical_sha256":"cc9fdbfe66fa33599e169004be8ce4b50360b48da3feacb51d0a866e627ee35f","source":{"kind":"arxiv","id":"1405.7673","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7673","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7673v1","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7673","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZSP5X7TG7IZV","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZSP5X7TG7IZVTHQW","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZSP5X7TG","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZSP5X7TG7IZVTHQWSACL5DHEWU","target":"record","payload":{"canonical_record":{"source":{"id":"1405.7673","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-29T19:37:51Z","cross_cats_sorted":[],"title_canon_sha256":"e8581b02af51c036a12121f17a8b662c5e7443c55ced64b03de590120d05d114","abstract_canon_sha256":"16683ac4aa6b30941174eb94fac561c6bbf3d0508c8ec919234380208dfee803"},"schema_version":"1.0"},"canonical_sha256":"cc9fdbfe66fa33599e169004be8ce4b50360b48da3feacb51d0a866e627ee35f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:50:50.749794Z","signature_b64":"H+o6kwrd2Qh1fct5OZe2xkJVATvN7zIZ0Xm9Q7eemwSMpU+N6wcHTKeAUp6iBUD9P0kMUztd8LY+zsPgm3Q6AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc9fdbfe66fa33599e169004be8ce4b50360b48da3feacb51d0a866e627ee35f","last_reissued_at":"2026-05-18T02:50:50.749303Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:50:50.749303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.7673","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":"2026-05-18T02:50:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jUZ7WuqToU+dmvRckukR37rz1WqLMB6mgE07C6tlKNoxVeQfTouC2bDft14TspcjHjzwK9UERIsfUZwBnkBCCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:21:29.361739Z"},"content_sha256":"f02eb483b2bdc3b913be869a672138e535d5f4f6144e92ed42578c3130b054d2","schema_version":"1.0","event_id":"sha256:f02eb483b2bdc3b913be869a672138e535d5f4f6144e92ed42578c3130b054d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZSP5X7TG7IZVTHQWSACL5DHEWU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self-Stabilizing Measurements for Noisy Metrology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Sai Vinjanampathy","submitted_at":"2014-05-29T19:37:51Z","abstract_excerpt":"We present a protocol to perform self-stabilizing measurements on noisy qubits. We employ rapid purification in a rotating frame whose frequency is estimated and periodically updated via a Bayesian estimation scheme. The Bayesian estimation protocol employs the continuous measurement record to improve the estimate, which in turn purifies the qubit more. This procedure stabilizes the qubit. Such an adaptive measurement scheme serves the purpose of purifying the state, while minimally interfering with the phase estimation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7673","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":"2026-05-18T02:50:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IkiE071XGvecRtN0ioKh3SZnSgH8lSwWxZf3/EypNjGMOodllQF+tKdwLe8BbjpONJYhKuWvhmwTW+PLlEDuAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T13:21:29.362086Z"},"content_sha256":"943311e591d44f8f20ac96c96a53e45746fcad06a00ebb0d2e0c14568ce78803","schema_version":"1.0","event_id":"sha256:943311e591d44f8f20ac96c96a53e45746fcad06a00ebb0d2e0c14568ce78803"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/bundle.json","state_url":"https://pith.science/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/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":"2026-06-03T13:21:29Z","links":{"resolver":"https://pith.science/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU","bundle":"https://pith.science/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/bundle.json","state":"https://pith.science/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZSP5X7TG7IZVTHQWSACL5DHEWU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZSP5X7TG7IZVTHQWSACL5DHEWU","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":"16683ac4aa6b30941174eb94fac561c6bbf3d0508c8ec919234380208dfee803","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-29T19:37:51Z","title_canon_sha256":"e8581b02af51c036a12121f17a8b662c5e7443c55ced64b03de590120d05d114"},"schema_version":"1.0","source":{"id":"1405.7673","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.7673","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"arxiv_version","alias_value":"1405.7673v1","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.7673","created_at":"2026-05-18T02:50:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZSP5X7TG7IZV","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZSP5X7TG7IZVTHQW","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZSP5X7TG","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:943311e591d44f8f20ac96c96a53e45746fcad06a00ebb0d2e0c14568ce78803","target":"graph","created_at":"2026-05-18T02:50:50Z","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"},"paper":{"abstract_excerpt":"We present a protocol to perform self-stabilizing measurements on noisy qubits. We employ rapid purification in a rotating frame whose frequency is estimated and periodically updated via a Bayesian estimation scheme. The Bayesian estimation protocol employs the continuous measurement record to improve the estimate, which in turn purifies the qubit more. This procedure stabilizes the qubit. Such an adaptive measurement scheme serves the purpose of purifying the state, while minimally interfering with the phase estimation.","authors_text":"Sai Vinjanampathy","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-29T19:37:51Z","title":"Self-Stabilizing Measurements for Noisy Metrology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.7673","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:f02eb483b2bdc3b913be869a672138e535d5f4f6144e92ed42578c3130b054d2","target":"record","created_at":"2026-05-18T02:50:50Z","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":"16683ac4aa6b30941174eb94fac561c6bbf3d0508c8ec919234380208dfee803","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-05-29T19:37:51Z","title_canon_sha256":"e8581b02af51c036a12121f17a8b662c5e7443c55ced64b03de590120d05d114"},"schema_version":"1.0","source":{"id":"1405.7673","kind":"arxiv","version":1}},"canonical_sha256":"cc9fdbfe66fa33599e169004be8ce4b50360b48da3feacb51d0a866e627ee35f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc9fdbfe66fa33599e169004be8ce4b50360b48da3feacb51d0a866e627ee35f","first_computed_at":"2026-05-18T02:50:50.749303Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:50:50.749303Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H+o6kwrd2Qh1fct5OZe2xkJVATvN7zIZ0Xm9Q7eemwSMpU+N6wcHTKeAUp6iBUD9P0kMUztd8LY+zsPgm3Q6AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:50:50.749794Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.7673","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f02eb483b2bdc3b913be869a672138e535d5f4f6144e92ed42578c3130b054d2","sha256:943311e591d44f8f20ac96c96a53e45746fcad06a00ebb0d2e0c14568ce78803"],"state_sha256":"6db7e95b71528a490977cad6d179376f0cf39ff147feddc36e9dc8154fe5ae8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1P/ASeQEYL7LHvoIkDtRlTc4P9Da13QT8v8QxbiAUGlBkfv1x9Y2upngO+1mgpmyd6jAygBepNtLAqdkGVpPBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T13:21:29.364027Z","bundle_sha256":"6aaa8a469805e9b395aa4235b62b9c05da3ffaa70c281978400fc263e20d6f17"}}