{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:J4KQTF5S6HT2QRAERWQSPMGRZV","short_pith_number":"pith:J4KQTF5S","canonical_record":{"source":{"id":"1409.2350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-08T14:04:37Z","cross_cats_sorted":["cond-mat.quant-gas"],"title_canon_sha256":"84377be904bbb896260a2c89b7e47cb5fa6f2438228d2d1822bfaa3ef7cb3a96","abstract_canon_sha256":"76906a323e439882706b662313769ad0711be26f92fff65e55763badc4b931d9"},"schema_version":"1.0"},"canonical_sha256":"4f150997b2f1e7a844048da127b0d1cd6428dd9e092824567ade77cfb625cfd3","source":{"kind":"arxiv","id":"1409.2350","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2350","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2350v1","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2350","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"pith_short_12","alias_value":"J4KQTF5S6HT2","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"J4KQTF5S6HT2QRAE","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"J4KQTF5S","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:J4KQTF5S6HT2QRAERWQSPMGRZV","target":"record","payload":{"canonical_record":{"source":{"id":"1409.2350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-08T14:04:37Z","cross_cats_sorted":["cond-mat.quant-gas"],"title_canon_sha256":"84377be904bbb896260a2c89b7e47cb5fa6f2438228d2d1822bfaa3ef7cb3a96","abstract_canon_sha256":"76906a323e439882706b662313769ad0711be26f92fff65e55763badc4b931d9"},"schema_version":"1.0"},"canonical_sha256":"4f150997b2f1e7a844048da127b0d1cd6428dd9e092824567ade77cfb625cfd3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:06.716724Z","signature_b64":"c3NdZakNZhD93mKm+WqCAoWXahs8tdGPkSzS8mo/8HG1mgL7+vaJyo1KR6ctHpjWpPaNcipeDOcnudLkg5RAAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4f150997b2f1e7a844048da127b0d1cd6428dd9e092824567ade77cfb625cfd3","last_reissued_at":"2026-05-18T01:42:06.716171Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:06.716171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.2350","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":"2026-05-18T01:42:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b8srDdvvjuv9zvT8ISr+cFWzNs8DqtOZAxEW+N/F/gnwTkiNDINjS2Ko0359/eQFgN/CUtEq21xJCo47aqjdAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:22:01.448188Z"},"content_sha256":"41d944a5dad5a56de7a24560af32087cd2fc352dc148dab8d94c1b680eaa1f97","schema_version":"1.0","event_id":"sha256:41d944a5dad5a56de7a24560af32087cd2fc352dc148dab8d94c1b680eaa1f97"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:J4KQTF5S6HT2QRAERWQSPMGRZV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-stage magneto-optical trapping and narrow-line cooling of $^6$Li atoms to high phase-space density","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas"],"primary_cat":"physics.atom-ph","authors_text":"Christian Gross, Huat Chai Jaren Gan, Jimmy Sebastian, Kai Dieckmann, Ke Li, Wenhui Li","submitted_at":"2014-09-08T14:04:37Z","abstract_excerpt":"We report an experimental study of peak and phase-space density of a two-stage magneto-optical trap (MOT) of 6-Li atoms, which exploits the narrower $2S_{1/2}\\rightarrow 3P_{3/2}$ ultra-violet (UV) transition at 323 nm following trapping and cooling on the more common D2 transition at 671 nm. The UV MOT is loaded from a red MOT and is compressed to give a high phase-space density up to $3\\times 10^{-4}$. Temperatures as low as 33 $\\mu$K are achieved on the UV transition. We study the density limiting factors and in particular find a value for the light-assisted collisional loss coefficient of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2350","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":"2026-05-18T01:42:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s7yg+srGT1i4HcdaINbVlHR/6QH69TKnYuH6bLkqwndESsF6rK438LKXys4RradHdqTvkFEyOG3CZoRkJLT7AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T22:22:01.448542Z"},"content_sha256":"fd93e92fbdd2c0077f988ffdb5080bf87312c1fd7366ddd42d06516799b172fb","schema_version":"1.0","event_id":"sha256:fd93e92fbdd2c0077f988ffdb5080bf87312c1fd7366ddd42d06516799b172fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/bundle.json","state_url":"https://pith.science/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/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":"2026-06-01T22:22:01Z","links":{"resolver":"https://pith.science/pith/J4KQTF5S6HT2QRAERWQSPMGRZV","bundle":"https://pith.science/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/bundle.json","state":"https://pith.science/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J4KQTF5S6HT2QRAERWQSPMGRZV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:J4KQTF5S6HT2QRAERWQSPMGRZV","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":"76906a323e439882706b662313769ad0711be26f92fff65e55763badc4b931d9","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-08T14:04:37Z","title_canon_sha256":"84377be904bbb896260a2c89b7e47cb5fa6f2438228d2d1822bfaa3ef7cb3a96"},"schema_version":"1.0","source":{"id":"1409.2350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2350","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2350v1","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2350","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"pith_short_12","alias_value":"J4KQTF5S6HT2","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"J4KQTF5S6HT2QRAE","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"J4KQTF5S","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:fd93e92fbdd2c0077f988ffdb5080bf87312c1fd7366ddd42d06516799b172fb","target":"graph","created_at":"2026-05-18T01:42:06Z","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 report an experimental study of peak and phase-space density of a two-stage magneto-optical trap (MOT) of 6-Li atoms, which exploits the narrower $2S_{1/2}\\rightarrow 3P_{3/2}$ ultra-violet (UV) transition at 323 nm following trapping and cooling on the more common D2 transition at 671 nm. The UV MOT is loaded from a red MOT and is compressed to give a high phase-space density up to $3\\times 10^{-4}$. Temperatures as low as 33 $\\mu$K are achieved on the UV transition. We study the density limiting factors and in particular find a value for the light-assisted collisional loss coefficient of ","authors_text":"Christian Gross, Huat Chai Jaren Gan, Jimmy Sebastian, Kai Dieckmann, Ke Li, Wenhui Li","cross_cats":["cond-mat.quant-gas"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-08T14:04:37Z","title":"Two-stage magneto-optical trapping and narrow-line cooling of $^6$Li atoms to high phase-space density"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2350","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":"sha256:41d944a5dad5a56de7a24560af32087cd2fc352dc148dab8d94c1b680eaa1f97","target":"record","created_at":"2026-05-18T01:42:06Z","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":"76906a323e439882706b662313769ad0711be26f92fff65e55763badc4b931d9","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-09-08T14:04:37Z","title_canon_sha256":"84377be904bbb896260a2c89b7e47cb5fa6f2438228d2d1822bfaa3ef7cb3a96"},"schema_version":"1.0","source":{"id":"1409.2350","kind":"arxiv","version":1}},"canonical_sha256":"4f150997b2f1e7a844048da127b0d1cd6428dd9e092824567ade77cfb625cfd3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4f150997b2f1e7a844048da127b0d1cd6428dd9e092824567ade77cfb625cfd3","first_computed_at":"2026-05-18T01:42:06.716171Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:06.716171Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c3NdZakNZhD93mKm+WqCAoWXahs8tdGPkSzS8mo/8HG1mgL7+vaJyo1KR6ctHpjWpPaNcipeDOcnudLkg5RAAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:06.716724Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.2350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41d944a5dad5a56de7a24560af32087cd2fc352dc148dab8d94c1b680eaa1f97","sha256:fd93e92fbdd2c0077f988ffdb5080bf87312c1fd7366ddd42d06516799b172fb"],"state_sha256":"9bd6bfa3248ca11e18808a0310c2d805a7126e09cdde7dc9aa30d4739753255e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BAUu7eVOxif7pJZT3ubmJ1SXDiWbpqZrkWi83IDpNespGWTUDvpLA80ILMcVZWDo8FL054eYW/qvst7YtFbZAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T22:22:01.450368Z","bundle_sha256":"ae84e93c35353bfabf47bf73bc6127fa39f98eec98af9399170c27119c16fcbb"}}