{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:QPCOLOY6SAV5QBEQAVKEXNXGAD","short_pith_number":"pith:QPCOLOY6","canonical_record":{"source":{"id":"2008.01356","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-04T06:23:40Z","cross_cats_sorted":["cond-mat.quant-gas","physics.atm-clus"],"title_canon_sha256":"a8cd71f9ec896ef9ae68c8c29a0971dd0fec7997ff43d116398b276178dc7ab3","abstract_canon_sha256":"084e903fb3d6496dd9b1fb406c5474f8097c0e79438d33f180576ff038966b56"},"schema_version":"1.0"},"canonical_sha256":"83c4e5bb1e902bd8049005544bb6e600d6329a06717d57a96dc1d49bb3aa8fde","source":{"kind":"arxiv","id":"2008.01356","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.01356","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"2008.01356v1","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.01356","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"QPCOLOY6SAV5","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_16","alias_value":"QPCOLOY6SAV5QBEQ","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_8","alias_value":"QPCOLOY6","created_at":"2026-07-05T01:24:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:QPCOLOY6SAV5QBEQAVKEXNXGAD","target":"record","payload":{"canonical_record":{"source":{"id":"2008.01356","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-04T06:23:40Z","cross_cats_sorted":["cond-mat.quant-gas","physics.atm-clus"],"title_canon_sha256":"a8cd71f9ec896ef9ae68c8c29a0971dd0fec7997ff43d116398b276178dc7ab3","abstract_canon_sha256":"084e903fb3d6496dd9b1fb406c5474f8097c0e79438d33f180576ff038966b56"},"schema_version":"1.0"},"canonical_sha256":"83c4e5bb1e902bd8049005544bb6e600d6329a06717d57a96dc1d49bb3aa8fde","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:24:20.286292Z","signature_b64":"IL07lMhoDW7dmqo6pf8MjoRSCKjudRbeW/F61PFDbl41y8V5NpKMRp9eOkMhHZk7vwBFZDWF4L87vH71NjGrDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83c4e5bb1e902bd8049005544bb6e600d6329a06717d57a96dc1d49bb3aa8fde","last_reissued_at":"2026-07-05T01:24:20.285940Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:24:20.285940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.01356","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":"2026-07-05T01:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oyEpwEsPUe7LmYyewLmirFX2DTRfV3b6fsb63XdDFt+p+tV3Wu1dPxV8UqsFdZhUq4eq/T6aWF1pBWcfCTqjAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:55:15.883259Z"},"content_sha256":"70709da7b207cfb42746b4673fdffa2b631c86173f698c83c9d1183436fd24d3","schema_version":"1.0","event_id":"sha256:70709da7b207cfb42746b4673fdffa2b631c86173f698c83c9d1183436fd24d3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:QPCOLOY6SAV5QBEQAVKEXNXGAD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Dielectric Metasurface Optical Chip for the Generation of Cold Atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas","physics.atm-clus"],"primary_cat":"physics.optics","authors_text":"Basudeb Sain, Christian Schlickriede, Guixin Li, Junhong Deng, Jun Yang, Kai Bongs, Kingfai Li, Lingxiao Zhu, Mengyao Wang, Michael Holynski, Shuang Zhang, Thomas Zentgraf, Xuan Liu, Yu-Hung Lien, Yutao Tang","submitted_at":"2020-08-04T06:23:40Z","abstract_excerpt":"Compact and robust cold atom sources are increasingly important for quantum research, especially for transferring cutting-edge quantum science into practical applications. In this letter, we report on a novel scheme that utilizes a metasurface optical chip to replace the conventional bulky optical elements used to produce a cold atomic ensemble with a single incident laser beam, which is split by the metasurface into multiple beams of the desired polarization states. Atom numbers $~10^7$ and temperatures (about 35 ${\\mu}$K) of relevance to quantum sensing are achieved in a compact and robust f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.01356","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.01356/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s2MttloAChnTtRaM1b1vO0J04WTIku+hu56OX5KwQXazV7Iaa2/sD5LQ1keY2A7pbN+XaRI8JSOpvEVQ17v6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T15:55:15.884062Z"},"content_sha256":"afb61cbfd805c480d391fd42ee40a56a7429a112c738149262ca258d2bb8b032","schema_version":"1.0","event_id":"sha256:afb61cbfd805c480d391fd42ee40a56a7429a112c738149262ca258d2bb8b032"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/bundle.json","state_url":"https://pith.science/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/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":"2026-07-05T15:55:15Z","links":{"resolver":"https://pith.science/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD","bundle":"https://pith.science/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/bundle.json","state":"https://pith.science/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QPCOLOY6SAV5QBEQAVKEXNXGAD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:QPCOLOY6SAV5QBEQAVKEXNXGAD","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":"084e903fb3d6496dd9b1fb406c5474f8097c0e79438d33f180576ff038966b56","cross_cats_sorted":["cond-mat.quant-gas","physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-04T06:23:40Z","title_canon_sha256":"a8cd71f9ec896ef9ae68c8c29a0971dd0fec7997ff43d116398b276178dc7ab3"},"schema_version":"1.0","source":{"id":"2008.01356","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.01356","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"2008.01356v1","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.01356","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"QPCOLOY6SAV5","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_16","alias_value":"QPCOLOY6SAV5QBEQ","created_at":"2026-07-05T01:24:20Z"},{"alias_kind":"pith_short_8","alias_value":"QPCOLOY6","created_at":"2026-07-05T01:24:20Z"}],"graph_snapshots":[{"event_id":"sha256:afb61cbfd805c480d391fd42ee40a56a7429a112c738149262ca258d2bb8b032","target":"graph","created_at":"2026-07-05T01:24:20Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.01356/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Compact and robust cold atom sources are increasingly important for quantum research, especially for transferring cutting-edge quantum science into practical applications. In this letter, we report on a novel scheme that utilizes a metasurface optical chip to replace the conventional bulky optical elements used to produce a cold atomic ensemble with a single incident laser beam, which is split by the metasurface into multiple beams of the desired polarization states. Atom numbers $~10^7$ and temperatures (about 35 ${\\mu}$K) of relevance to quantum sensing are achieved in a compact and robust f","authors_text":"Basudeb Sain, Christian Schlickriede, Guixin Li, Junhong Deng, Jun Yang, Kai Bongs, Kingfai Li, Lingxiao Zhu, Mengyao Wang, Michael Holynski, Shuang Zhang, Thomas Zentgraf, Xuan Liu, Yu-Hung Lien, Yutao Tang","cross_cats":["cond-mat.quant-gas","physics.atm-clus"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-04T06:23:40Z","title":"A Dielectric Metasurface Optical Chip for the Generation of Cold Atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.01356","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":"sha256:70709da7b207cfb42746b4673fdffa2b631c86173f698c83c9d1183436fd24d3","target":"record","created_at":"2026-07-05T01:24:20Z","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":"084e903fb3d6496dd9b1fb406c5474f8097c0e79438d33f180576ff038966b56","cross_cats_sorted":["cond-mat.quant-gas","physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-08-04T06:23:40Z","title_canon_sha256":"a8cd71f9ec896ef9ae68c8c29a0971dd0fec7997ff43d116398b276178dc7ab3"},"schema_version":"1.0","source":{"id":"2008.01356","kind":"arxiv","version":1}},"canonical_sha256":"83c4e5bb1e902bd8049005544bb6e600d6329a06717d57a96dc1d49bb3aa8fde","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83c4e5bb1e902bd8049005544bb6e600d6329a06717d57a96dc1d49bb3aa8fde","first_computed_at":"2026-07-05T01:24:20.285940Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:24:20.285940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IL07lMhoDW7dmqo6pf8MjoRSCKjudRbeW/F61PFDbl41y8V5NpKMRp9eOkMhHZk7vwBFZDWF4L87vH71NjGrDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:24:20.286292Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.01356","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:70709da7b207cfb42746b4673fdffa2b631c86173f698c83c9d1183436fd24d3","sha256:afb61cbfd805c480d391fd42ee40a56a7429a112c738149262ca258d2bb8b032"],"state_sha256":"c2681533a74b18257c00d6216310a36f2321ddc6edcb05dc9e0e87acf0b65a95"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1WLmiCNYU7IOlK9mhTVpgW34MTmYw2C/f+JRvXzCYwLe2QfQZibt0F+W6eUvWs35sdMSsbBxCBiYBpKSqg4SAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T15:55:15.888333Z","bundle_sha256":"9c807086f384f451af80d8183fb2fae5c25b1548ee816674a692ae7701c4e9bf"}}