{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:Z5GMB5DFLONBNQ4KOK5YH7A5AL","short_pith_number":"pith:Z5GMB5DF","schema_version":"1.0","canonical_sha256":"cf4cc0f4655b9a16c38a72bb83fc1d02e8803e4a169c047d79ce47c3ea18eb79","source":{"kind":"arxiv","id":"1211.7094","version":2},"attestation_state":"computed","paper":{"title":"Solid-state electronic spin coherence time approaching one second","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Andrejs Jarmola, Dmitry Budker, Linh M. Pham, Nir Bar-Gill, Ronald L. Walsworth","submitted_at":"2012-11-29T21:20:54Z","abstract_excerpt":"Solid-state electronic spin systems such as nitrogen-vacancy (NV) color centers in diamond are promising for applications of quantum information, sensing, and metrology. However, a key challenge for such solid-state systems is to realize a spin coherence time that is much longer than the time for quantum spin manipulation protocols. Here we demonstrate an improvement of more than two orders of magnitude in the spin coherence time ($T_2$) of NV centers compared to previous measurements: $T_2 \\approx 0.5$ s at 77 K, which enables $\\sim 10^7$ coherent NV spin manipulations before decoherence. We "},"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":"1211.7094","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-11-29T21:20:54Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"58ecda4e06488348ddcda06f656f9fd01d07823d2057ff7b8b96da5ee89ac846","abstract_canon_sha256":"e0a727aeb49d5d8b2787e77fe4c6bad8e46405a0c3ea076f82fcf9dc541c5931"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:53.070811Z","signature_b64":"Jv2/gAapSG6vhTOhCmyvcYthUByeeQgyI4CLNu8t+liJ/T3sZd5HhDc5A7PTbMnDlLmzp+NPOMZ/9FXFhMv/Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf4cc0f4655b9a16c38a72bb83fc1d02e8803e4a169c047d79ce47c3ea18eb79","last_reissued_at":"2026-05-18T01:52:53.070404Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:53.070404Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Solid-state electronic spin coherence time approaching one second","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Andrejs Jarmola, Dmitry Budker, Linh M. Pham, Nir Bar-Gill, Ronald L. Walsworth","submitted_at":"2012-11-29T21:20:54Z","abstract_excerpt":"Solid-state electronic spin systems such as nitrogen-vacancy (NV) color centers in diamond are promising for applications of quantum information, sensing, and metrology. However, a key challenge for such solid-state systems is to realize a spin coherence time that is much longer than the time for quantum spin manipulation protocols. Here we demonstrate an improvement of more than two orders of magnitude in the spin coherence time ($T_2$) of NV centers compared to previous measurements: $T_2 \\approx 0.5$ s at 77 K, which enables $\\sim 10^7$ coherent NV spin manipulations before decoherence. We "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.7094","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":"1211.7094","created_at":"2026-05-18T01:52:53.070470+00:00"},{"alias_kind":"arxiv_version","alias_value":"1211.7094v2","created_at":"2026-05-18T01:52:53.070470+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.7094","created_at":"2026-05-18T01:52:53.070470+00:00"},{"alias_kind":"pith_short_12","alias_value":"Z5GMB5DFLONB","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_16","alias_value":"Z5GMB5DFLONBNQ4K","created_at":"2026-05-18T12:27:30.460161+00:00"},{"alias_kind":"pith_short_8","alias_value":"Z5GMB5DF","created_at":"2026-05-18T12:27:30.460161+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/Z5GMB5DFLONBNQ4KOK5YH7A5AL","json":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL.json","graph_json":"https://pith.science/api/pith-number/Z5GMB5DFLONBNQ4KOK5YH7A5AL/graph.json","events_json":"https://pith.science/api/pith-number/Z5GMB5DFLONBNQ4KOK5YH7A5AL/events.json","paper":"https://pith.science/paper/Z5GMB5DF"},"agent_actions":{"view_html":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL","download_json":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL.json","view_paper":"https://pith.science/paper/Z5GMB5DF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1211.7094&json=true","fetch_graph":"https://pith.science/api/pith-number/Z5GMB5DFLONBNQ4KOK5YH7A5AL/graph.json","fetch_events":"https://pith.science/api/pith-number/Z5GMB5DFLONBNQ4KOK5YH7A5AL/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL/action/storage_attestation","attest_author":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL/action/author_attestation","sign_citation":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL/action/citation_signature","submit_replication":"https://pith.science/pith/Z5GMB5DFLONBNQ4KOK5YH7A5AL/action/replication_record"}},"created_at":"2026-05-18T01:52:53.070470+00:00","updated_at":"2026-05-18T01:52:53.070470+00:00"}