{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:YU4KAHNDR7ATHDA4WPKGLKH2RZ","short_pith_number":"pith:YU4KAHND","schema_version":"1.0","canonical_sha256":"c538a01da38fc1338c1cb3d465a8fa8e6bc203a1215ae3f1bc1dfcbf6cb56969","source":{"kind":"arxiv","id":"1311.0635","version":2},"attestation_state":"computed","paper":{"title":"A one-dimensional ultracold medium of extreme optical depth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Frank Blatt, Thomas Halfmann, Thorsten Peters","submitted_at":"2013-11-04T10:19:43Z","abstract_excerpt":"We report on the preparation of a one-dimensional ultracold medium in a hollow-core photonic crystal fiber, reaching an effective optical depth of 1000(150). We achieved this extreme optical depth by transferring atoms from a magneto-optical trap into a far-detuned optical dipole trap inside the hollow-core fiber, yielding up to 2.5(3)$\\times$10$^5$ atoms inside the core with a loading efficiency of $2.5(6)~\\%$. The preparation of an ultracold medium of such huge optical depth paves the way towards new applications in quantum optics and nonlinear optics."},"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":"1311.0635","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-11-04T10:19:43Z","cross_cats_sorted":["physics.atom-ph","physics.optics"],"title_canon_sha256":"5e8176bdb1151e308f4ac2003cb3f5fe5c353cdc39ef0d3676c93bd3c7b3edea","abstract_canon_sha256":"35f52133552fc3ee7bee89fa5391218288dab9e2cca8eac74595180ea7f374ef"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:01:56.014244Z","signature_b64":"TJWz9QH9cqiH5UKbXjGyySI36z6eCdgYpJrkP8nhqikKyGjUOoyqYxOK0TKW8H4WLxS6MWL/qvY+XiCd7sKFAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c538a01da38fc1338c1cb3d465a8fa8e6bc203a1215ae3f1bc1dfcbf6cb56969","last_reissued_at":"2026-05-18T03:01:56.013530Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:01:56.013530Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A one-dimensional ultracold medium of extreme optical depth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Frank Blatt, Thomas Halfmann, Thorsten Peters","submitted_at":"2013-11-04T10:19:43Z","abstract_excerpt":"We report on the preparation of a one-dimensional ultracold medium in a hollow-core photonic crystal fiber, reaching an effective optical depth of 1000(150). We achieved this extreme optical depth by transferring atoms from a magneto-optical trap into a far-detuned optical dipole trap inside the hollow-core fiber, yielding up to 2.5(3)$\\times$10$^5$ atoms inside the core with a loading efficiency of $2.5(6)~\\%$. The preparation of an ultracold medium of such huge optical depth paves the way towards new applications in quantum optics and nonlinear optics."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.0635","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":"1311.0635","created_at":"2026-05-18T03:01:56.013646+00:00"},{"alias_kind":"arxiv_version","alias_value":"1311.0635v2","created_at":"2026-05-18T03:01:56.013646+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.0635","created_at":"2026-05-18T03:01:56.013646+00:00"},{"alias_kind":"pith_short_12","alias_value":"YU4KAHNDR7AT","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_16","alias_value":"YU4KAHNDR7ATHDA4","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_8","alias_value":"YU4KAHND","created_at":"2026-05-18T12:28:09.283467+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/YU4KAHNDR7ATHDA4WPKGLKH2RZ","json":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ.json","graph_json":"https://pith.science/api/pith-number/YU4KAHNDR7ATHDA4WPKGLKH2RZ/graph.json","events_json":"https://pith.science/api/pith-number/YU4KAHNDR7ATHDA4WPKGLKH2RZ/events.json","paper":"https://pith.science/paper/YU4KAHND"},"agent_actions":{"view_html":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ","download_json":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ.json","view_paper":"https://pith.science/paper/YU4KAHND","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1311.0635&json=true","fetch_graph":"https://pith.science/api/pith-number/YU4KAHNDR7ATHDA4WPKGLKH2RZ/graph.json","fetch_events":"https://pith.science/api/pith-number/YU4KAHNDR7ATHDA4WPKGLKH2RZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ/action/storage_attestation","attest_author":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ/action/author_attestation","sign_citation":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ/action/citation_signature","submit_replication":"https://pith.science/pith/YU4KAHNDR7ATHDA4WPKGLKH2RZ/action/replication_record"}},"created_at":"2026-05-18T03:01:56.013646+00:00","updated_at":"2026-05-18T03:01:56.013646+00:00"}