{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:O6I7QYYN5QSMHVIX7SMNMX5UKG","short_pith_number":"pith:O6I7QYYN","canonical_record":{"source":{"id":"1803.01609","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-05T11:21:32Z","cross_cats_sorted":[],"title_canon_sha256":"0152f0957d1ad4a5410d04efc5df36d120f7045bee9eb0afc9836f28001c191c","abstract_canon_sha256":"8e65ac8cebbbbbdb1a541385983a95f6cd3f3a64c1686bf0d524c025ad381582"},"schema_version":"1.0"},"canonical_sha256":"7791f8630dec24c3d517fc98d65fb451a7c36520ddea5a5b4728fa47359673c4","source":{"kind":"arxiv","id":"1803.01609","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.01609","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"arxiv_version","alias_value":"1803.01609v2","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01609","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"pith_short_12","alias_value":"O6I7QYYN5QSM","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"O6I7QYYN5QSMHVIX","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"O6I7QYYN","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:O6I7QYYN5QSMHVIX7SMNMX5UKG","target":"record","payload":{"canonical_record":{"source":{"id":"1803.01609","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-05T11:21:32Z","cross_cats_sorted":[],"title_canon_sha256":"0152f0957d1ad4a5410d04efc5df36d120f7045bee9eb0afc9836f28001c191c","abstract_canon_sha256":"8e65ac8cebbbbbdb1a541385983a95f6cd3f3a64c1686bf0d524c025ad381582"},"schema_version":"1.0"},"canonical_sha256":"7791f8630dec24c3d517fc98d65fb451a7c36520ddea5a5b4728fa47359673c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:49.460592Z","signature_b64":"DZkJBbcAcFLkbo0DnFIHzfM/ftbutHPdGRWG5aELTvCpNWsxMhk1W6UT/9USk3yeY2BC3b1R3aPBj0D+h8RDCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7791f8630dec24c3d517fc98d65fb451a7c36520ddea5a5b4728fa47359673c4","last_reissued_at":"2026-05-18T00:03:49.459950Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:49.459950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.01609","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:03:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uf7FGSh7gWsxMu0QERzPNYZQeIprg2J8toq2PWodROEpJ2ztZNDjbUr9RkLUrzBZlmpqNmnmkruqzt2TFZWTBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:53:53.345994Z"},"content_sha256":"90f94c560428f44480d8166592f735dd03d2ef4c14eaeb14ded44097f06f039b","schema_version":"1.0","event_id":"sha256:90f94c560428f44480d8166592f735dd03d2ef4c14eaeb14ded44097f06f039b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:O6I7QYYN5QSMHVIX7SMNMX5UKG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Assessment of a silicon quantum dot spin qubit environment via noise spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Laucht, A. Morello, A. S. Dzurak, B. Hensen, C. H. Yang, F. E. Hudson, J. C. C. Hwang, K. M. Itoh, K. W. Chan, T. Tanttu, W. Huang","submitted_at":"2018-03-05T11:21:32Z","abstract_excerpt":"Preserving coherence long enough to perform meaningful calculations is one of the major challenges on the pathway to large scale quantum computer implementations. Noise coupled from the environment is the main contributing factor to decoherence but can be mitigated via engineering design and control solutions. However, this is only possible after acquiring a thorough understanding of the dominant noise sources and their spectrum. In this paper, we employ a silicon quantum dot spin qubit as a metrological device to study the noise environment experienced by the qubit. We compare the sensitivity"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01609","kind":"arxiv","version":2},"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":"2026-05-18T00:03:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rwddhcjVCoHlF2p+T6SpEPZajDUKcjoEqJy4yXL/l3fLXaOG8mfST+e2/HILd9Z+wDYe3swwBLro6FWCcTcJCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T09:53:53.346356Z"},"content_sha256":"f30320f0c6087c700243f198b0b7d7ab583ed172f974639c9ef99db8d05066ef","schema_version":"1.0","event_id":"sha256:f30320f0c6087c700243f198b0b7d7ab583ed172f974639c9ef99db8d05066ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/bundle.json","state_url":"https://pith.science/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/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":"2026-06-02T09:53:53Z","links":{"resolver":"https://pith.science/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG","bundle":"https://pith.science/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/bundle.json","state":"https://pith.science/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O6I7QYYN5QSMHVIX7SMNMX5UKG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:O6I7QYYN5QSMHVIX7SMNMX5UKG","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":"8e65ac8cebbbbbdb1a541385983a95f6cd3f3a64c1686bf0d524c025ad381582","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-05T11:21:32Z","title_canon_sha256":"0152f0957d1ad4a5410d04efc5df36d120f7045bee9eb0afc9836f28001c191c"},"schema_version":"1.0","source":{"id":"1803.01609","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.01609","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"arxiv_version","alias_value":"1803.01609v2","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.01609","created_at":"2026-05-18T00:03:49Z"},{"alias_kind":"pith_short_12","alias_value":"O6I7QYYN5QSM","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"O6I7QYYN5QSMHVIX","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"O6I7QYYN","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:f30320f0c6087c700243f198b0b7d7ab583ed172f974639c9ef99db8d05066ef","target":"graph","created_at":"2026-05-18T00:03:49Z","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":"Preserving coherence long enough to perform meaningful calculations is one of the major challenges on the pathway to large scale quantum computer implementations. Noise coupled from the environment is the main contributing factor to decoherence but can be mitigated via engineering design and control solutions. However, this is only possible after acquiring a thorough understanding of the dominant noise sources and their spectrum. In this paper, we employ a silicon quantum dot spin qubit as a metrological device to study the noise environment experienced by the qubit. We compare the sensitivity","authors_text":"A. Laucht, A. Morello, A. S. Dzurak, B. Hensen, C. H. Yang, F. E. Hudson, J. C. C. Hwang, K. M. Itoh, K. W. Chan, T. Tanttu, W. Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-05T11:21:32Z","title":"Assessment of a silicon quantum dot spin qubit environment via noise spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.01609","kind":"arxiv","version":2},"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":"sha256:90f94c560428f44480d8166592f735dd03d2ef4c14eaeb14ded44097f06f039b","target":"record","created_at":"2026-05-18T00:03:49Z","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":"8e65ac8cebbbbbdb1a541385983a95f6cd3f3a64c1686bf0d524c025ad381582","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-05T11:21:32Z","title_canon_sha256":"0152f0957d1ad4a5410d04efc5df36d120f7045bee9eb0afc9836f28001c191c"},"schema_version":"1.0","source":{"id":"1803.01609","kind":"arxiv","version":2}},"canonical_sha256":"7791f8630dec24c3d517fc98d65fb451a7c36520ddea5a5b4728fa47359673c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7791f8630dec24c3d517fc98d65fb451a7c36520ddea5a5b4728fa47359673c4","first_computed_at":"2026-05-18T00:03:49.459950Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:49.459950Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DZkJBbcAcFLkbo0DnFIHzfM/ftbutHPdGRWG5aELTvCpNWsxMhk1W6UT/9USk3yeY2BC3b1R3aPBj0D+h8RDCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:49.460592Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.01609","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90f94c560428f44480d8166592f735dd03d2ef4c14eaeb14ded44097f06f039b","sha256:f30320f0c6087c700243f198b0b7d7ab583ed172f974639c9ef99db8d05066ef"],"state_sha256":"e38b2986a84f7d3f7cd09081baa1f8f6d41cbfdc643b1582eac637fdee1d00bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BGOrJ6bKf/P0y8S1OI33GK9NUY6ye+zfJwqyr9AKTXNv8QwW7vQWD8d7gL50xS+6Jy0+lm+ilYoaFsYzN31VAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T09:53:53.348411Z","bundle_sha256":"bc9d9d2ecc3e0309c45bded526c0c68d3e96c0d1af46ad65b85dd2a6eac7057d"}}