{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:GSENPJ4LQ6P66Y54SQC2YNKQHO","short_pith_number":"pith:GSENPJ4L","schema_version":"1.0","canonical_sha256":"3488d7a78b879fef63bc9405ac35503bb770391d8d92fb122b9d53428b77841d","source":{"kind":"arxiv","id":"1403.2093","version":2},"attestation_state":"computed","paper":{"title":"Hole Spin Coherence in a Ge/Si Heterostructure Nanowire","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. P. Higginbotham, C. M. Lieber, C. M. Marcus, F. Kuemmeth, H. Yan, J. Yao, T. W. Larsen","submitted_at":"2014-03-09T19:08:35Z","abstract_excerpt":"Relaxation and dephasing of hole spins are measured in a gate-defined Ge/Si nanowire double quantum dot using a fast pulsed-gate method and dispersive readout. An inhomogeneous dephasing time $T_2^* \\sim 0.18~\\mathrm{\\mu s}$ exceeds corresponding measurements in III-V semiconductors by more than an order of magnitude, as expected for predominately nuclear-spin-free materials. Dephasing is observed to be exponential in time, indicating the presence of a broadband noise source, rather than Gaussian, previously seen in systems with nuclear-spin-dominated dephasing."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1403.2093","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-03-09T19:08:35Z","cross_cats_sorted":[],"title_canon_sha256":"9f6dbb1a5a5d63a81bb1fac9a874f849fabb766be35016bdc2810b971df3652c","abstract_canon_sha256":"969cdb07e94fe4501fd71632848eee386dc977bb46a8968008787928d69b4817"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:46.970740Z","signature_b64":"W9Ktol+xbHutPY6qDU4s1HY2vL5KOf3+19rPogjs02vK8ZUOzk5Sk7pDCNV9uPqwtyVvhct0fC4MjgsMjZUyCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3488d7a78b879fef63bc9405ac35503bb770391d8d92fb122b9d53428b77841d","last_reissued_at":"2026-05-18T02:49:46.970382Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:46.970382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hole Spin Coherence in a Ge/Si Heterostructure Nanowire","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. P. Higginbotham, C. M. Lieber, C. M. Marcus, F. Kuemmeth, H. Yan, J. Yao, T. W. Larsen","submitted_at":"2014-03-09T19:08:35Z","abstract_excerpt":"Relaxation and dephasing of hole spins are measured in a gate-defined Ge/Si nanowire double quantum dot using a fast pulsed-gate method and dispersive readout. An inhomogeneous dephasing time $T_2^* \\sim 0.18~\\mathrm{\\mu s}$ exceeds corresponding measurements in III-V semiconductors by more than an order of magnitude, as expected for predominately nuclear-spin-free materials. Dephasing is observed to be exponential in time, indicating the presence of a broadband noise source, rather than Gaussian, previously seen in systems with nuclear-spin-dominated dephasing."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.2093","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1403.2093","created_at":"2026-05-18T02:49:46.970436+00:00"},{"alias_kind":"arxiv_version","alias_value":"1403.2093v2","created_at":"2026-05-18T02:49:46.970436+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.2093","created_at":"2026-05-18T02:49:46.970436+00:00"},{"alias_kind":"pith_short_12","alias_value":"GSENPJ4LQ6P6","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_16","alias_value":"GSENPJ4LQ6P66Y54","created_at":"2026-05-18T12:28:30.664211+00:00"},{"alias_kind":"pith_short_8","alias_value":"GSENPJ4L","created_at":"2026-05-18T12:28:30.664211+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO","json":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO.json","graph_json":"https://pith.science/api/pith-number/GSENPJ4LQ6P66Y54SQC2YNKQHO/graph.json","events_json":"https://pith.science/api/pith-number/GSENPJ4LQ6P66Y54SQC2YNKQHO/events.json","paper":"https://pith.science/paper/GSENPJ4L"},"agent_actions":{"view_html":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO","download_json":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO.json","view_paper":"https://pith.science/paper/GSENPJ4L","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1403.2093&json=true","fetch_graph":"https://pith.science/api/pith-number/GSENPJ4LQ6P66Y54SQC2YNKQHO/graph.json","fetch_events":"https://pith.science/api/pith-number/GSENPJ4LQ6P66Y54SQC2YNKQHO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO/action/storage_attestation","attest_author":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO/action/author_attestation","sign_citation":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO/action/citation_signature","submit_replication":"https://pith.science/pith/GSENPJ4LQ6P66Y54SQC2YNKQHO/action/replication_record"}},"created_at":"2026-05-18T02:49:46.970436+00:00","updated_at":"2026-05-18T02:49:46.970436+00:00"}