{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:OVRDFABLGNQBH3ZPZ2TFU4AG6I","short_pith_number":"pith:OVRDFABL","canonical_record":{"source":{"id":"2101.00972","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-04T13:50:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"a647688c4bc586d41a00d4c605a223902545595f5aa371c77cde79bbeeaff39f","abstract_canon_sha256":"0aad5d395c552f4634da4dff569115afcb6f24b87b69d00a70c16d27468f7a75"},"schema_version":"1.0"},"canonical_sha256":"756232802b336013ef2fcea65a7006f21524170855db1078165c56807ab0068e","source":{"kind":"arxiv","id":"2101.00972","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.00972","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"arxiv_version","alias_value":"2101.00972v2","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.00972","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_12","alias_value":"OVRDFABLGNQB","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_16","alias_value":"OVRDFABLGNQBH3ZP","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_8","alias_value":"OVRDFABL","created_at":"2026-07-05T02:31:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:OVRDFABLGNQBH3ZPZ2TFU4AG6I","target":"record","payload":{"canonical_record":{"source":{"id":"2101.00972","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-04T13:50:38Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"a647688c4bc586d41a00d4c605a223902545595f5aa371c77cde79bbeeaff39f","abstract_canon_sha256":"0aad5d395c552f4634da4dff569115afcb6f24b87b69d00a70c16d27468f7a75"},"schema_version":"1.0"},"canonical_sha256":"756232802b336013ef2fcea65a7006f21524170855db1078165c56807ab0068e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:31:48.498978Z","signature_b64":"ctDbT2pKGyPJXQu1W0vwnUKZhlwMVE6YDm6heiBgTRjjuCISJ53suCMsgukkcg3SVtcADNJ63354rFJ5QCajAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"756232802b336013ef2fcea65a7006f21524170855db1078165c56807ab0068e","last_reissued_at":"2026-07-05T02:31:48.498500Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:31:48.498500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2101.00972","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:31:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+3RgdT5zj/qrCYJJVqoc7AKfyBeN6SB5wf21t+YgeU4cEfIE9qtig0rzT/mPGs+F28L+4Gakr5hoSU949wmYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:11:38.521379Z"},"content_sha256":"72d99c2a8ebe32186dc817fae350072fbe8081404f422a420b310431d5efe1ad","schema_version":"1.0","event_id":"sha256:72d99c2a8ebe32186dc817fae350072fbe8081404f422a420b310431d5efe1ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:OVRDFABLGNQBH3ZPZ2TFU4AG6I","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultracold atom interferometry in space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Achim Peters, Aline N. Dinkelaker, Andreas Wicht, Andr\\'e Wenzlawski, Benjamin Weps, Claus Braxmaier, Claus L\\\"ammerzahl, Daniel L\\\"udtke, Dennis Becker, Ernst M. Rasel, Hauke M\\\"untinga, Holger Ahlers, Jens Grosse, Klaus Sengstock, Maike D. Lachmann, Markus Krutzik, Naceur Gaaloul, Ortwin Hellmig, Patrick Windpassinger, Stephan T. Seidel, Thijs Wendrich, Vladimir Schkolnik, Wolfgang Ertmer, Wolfgang P. Schleich","submitted_at":"2021-01-04T13:50:38Z","abstract_excerpt":"Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne matter-wave interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. On a sounding rocket, we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.00972","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2101.00972/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":"2026-07-05T02:31:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wsBNtJ3Xsfui/aIdygV1dE6xtbbZHMA0bwEgP+ypzXF0HWe1C/NXQkPAPyeMC5aFQSLDTBNnBtU5W7lV12Y9Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T11:11:38.521771Z"},"content_sha256":"a208f3c40de221aede2538d2b41ed7b1ab4bac5640c3e96084962de8ae9beb6a","schema_version":"1.0","event_id":"sha256:a208f3c40de221aede2538d2b41ed7b1ab4bac5640c3e96084962de8ae9beb6a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/bundle.json","state_url":"https://pith.science/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/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":"2026-07-06T11:11:38Z","links":{"resolver":"https://pith.science/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I","bundle":"https://pith.science/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/bundle.json","state":"https://pith.science/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OVRDFABLGNQBH3ZPZ2TFU4AG6I/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:OVRDFABLGNQBH3ZPZ2TFU4AG6I","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":"0aad5d395c552f4634da4dff569115afcb6f24b87b69d00a70c16d27468f7a75","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-04T13:50:38Z","title_canon_sha256":"a647688c4bc586d41a00d4c605a223902545595f5aa371c77cde79bbeeaff39f"},"schema_version":"1.0","source":{"id":"2101.00972","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2101.00972","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"arxiv_version","alias_value":"2101.00972v2","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2101.00972","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_12","alias_value":"OVRDFABLGNQB","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_16","alias_value":"OVRDFABLGNQBH3ZP","created_at":"2026-07-05T02:31:48Z"},{"alias_kind":"pith_short_8","alias_value":"OVRDFABL","created_at":"2026-07-05T02:31:48Z"}],"graph_snapshots":[{"event_id":"sha256:a208f3c40de221aede2538d2b41ed7b1ab4bac5640c3e96084962de8ae9beb6a","target":"graph","created_at":"2026-07-05T02:31:48Z","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/2101.00972/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne matter-wave interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. On a sounding rocket, we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the con","authors_text":"Achim Peters, Aline N. Dinkelaker, Andreas Wicht, Andr\\'e Wenzlawski, Benjamin Weps, Claus Braxmaier, Claus L\\\"ammerzahl, Daniel L\\\"udtke, Dennis Becker, Ernst M. Rasel, Hauke M\\\"untinga, Holger Ahlers, Jens Grosse, Klaus Sengstock, Maike D. Lachmann, Markus Krutzik, Naceur Gaaloul, Ortwin Hellmig, Patrick Windpassinger, Stephan T. Seidel, Thijs Wendrich, Vladimir Schkolnik, Wolfgang Ertmer, Wolfgang P. Schleich","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-04T13:50:38Z","title":"Ultracold atom interferometry in space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2101.00972","kind":"arxiv","version":2},"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":"sha256:72d99c2a8ebe32186dc817fae350072fbe8081404f422a420b310431d5efe1ad","target":"record","created_at":"2026-07-05T02:31:48Z","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":"0aad5d395c552f4634da4dff569115afcb6f24b87b69d00a70c16d27468f7a75","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2021-01-04T13:50:38Z","title_canon_sha256":"a647688c4bc586d41a00d4c605a223902545595f5aa371c77cde79bbeeaff39f"},"schema_version":"1.0","source":{"id":"2101.00972","kind":"arxiv","version":2}},"canonical_sha256":"756232802b336013ef2fcea65a7006f21524170855db1078165c56807ab0068e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"756232802b336013ef2fcea65a7006f21524170855db1078165c56807ab0068e","first_computed_at":"2026-07-05T02:31:48.498500Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:31:48.498500Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ctDbT2pKGyPJXQu1W0vwnUKZhlwMVE6YDm6heiBgTRjjuCISJ53suCMsgukkcg3SVtcADNJ63354rFJ5QCajAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:31:48.498978Z","signed_message":"canonical_sha256_bytes"},"source_id":"2101.00972","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72d99c2a8ebe32186dc817fae350072fbe8081404f422a420b310431d5efe1ad","sha256:a208f3c40de221aede2538d2b41ed7b1ab4bac5640c3e96084962de8ae9beb6a"],"state_sha256":"f6f05955987c824b05ff0fc0052ef9528966aad6501af57cfb35fa1d8495bae8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/uCkwRpiRYOaHSXafDkObmg1NTG07HHxa66wBdwGlX1etisiz1+yx4CrnBtiITapV7M+Zr87RS0mfRtUz0v4CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T11:11:38.523816Z","bundle_sha256":"89eb850a9efd3ae3ba1316b790a002edc8b40b55b9ac0534aa23cd8182ae6a93"}}