{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:AT3X7SGXMC7QVUG4IB3FOUSOAN","short_pith_number":"pith:AT3X7SGX","canonical_record":{"source":{"id":"2504.13699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-04-18T13:58:16Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"64b42b81f78d5e8184038bd08b35a6d7ab68e1410afd3efc62db32c126774f0b","abstract_canon_sha256":"e84ed5d0031d788f5dc693a3f4848adc8d98c37b5416f30644c87efcea460eff"},"schema_version":"1.0"},"canonical_sha256":"04f77fc8d760bf0ad0dc407657524e036ac24d1ec885005104ea85799edd292b","source":{"kind":"arxiv","id":"2504.13699","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.13699","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"arxiv_version","alias_value":"2504.13699v1","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.13699","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_12","alias_value":"AT3X7SGXMC7Q","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_16","alias_value":"AT3X7SGXMC7QVUG4","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_8","alias_value":"AT3X7SGX","created_at":"2026-07-05T11:45:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:AT3X7SGXMC7QVUG4IB3FOUSOAN","target":"record","payload":{"canonical_record":{"source":{"id":"2504.13699","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-04-18T13:58:16Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"64b42b81f78d5e8184038bd08b35a6d7ab68e1410afd3efc62db32c126774f0b","abstract_canon_sha256":"e84ed5d0031d788f5dc693a3f4848adc8d98c37b5416f30644c87efcea460eff"},"schema_version":"1.0"},"canonical_sha256":"04f77fc8d760bf0ad0dc407657524e036ac24d1ec885005104ea85799edd292b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:45:33.801717Z","signature_b64":"ksgSW22VkCEaRKHjEvtTT3yL4PbdVNNVnBdoJ9+HwDjkIh68J4tovyWGj2e6EjF7aeHpP2GqDn66O7dsItDUDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"04f77fc8d760bf0ad0dc407657524e036ac24d1ec885005104ea85799edd292b","last_reissued_at":"2026-07-05T11:45:33.801193Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:45:33.801193Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.13699","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":"2026-07-05T11:45:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZG32qNy8BDkcOR8G05AHbHCWC/zrfoWt7xP8uaqlGUJrT6d1b/HictGstPofijDsz5r1hL/UdSLb8Db6vUsfBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T07:20:23.224692Z"},"content_sha256":"118a7dc68d9af236054a023115332b95f42e3c7d212f61320d3a5c726cc3f92f","schema_version":"1.0","event_id":"sha256:118a7dc68d9af236054a023115332b95f42e3c7d212f61320d3a5c726cc3f92f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:AT3X7SGXMC7QVUG4IB3FOUSOAN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Radio-Frequency Pseudo-Null Induced by Light in an Ion Trap","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Beomgeun Cho, Chiyoon Kim, Daun Chung, Hosung Shon, Jaehun You, Jeonghyun Park, Jiyong Kang, KwangYeul Choi, Kyungmin Lee, Seungwoo Yoo, Suhan Kim, Taehyun Kim, Uihwan Jeong, Woojun Lee, Yonghwan Cha","submitted_at":"2025-04-18T13:58:16Z","abstract_excerpt":"In a linear radio-frequency (rf) ion trap, the rf null is the point of zero electric field in the dynamic trapping potential where the ion motion is approximately harmonic. When displaced from the rf null, the ion is superimposed by fast oscillations known as micromotion, which can be probed through motion-sensitive light-atom interactions. In this work, we report on the emergence of the rf pseudo-null, a locus of points where the ion responds to light as if it were at the true rf null, despite being displaced from it. The phenomenon is fully explained by accounting for the general two-dimensi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.13699","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/2504.13699/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":"2026-07-05T11:45:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rFuVZdKb2cFRegpJ91syf1uxGte3gT8zwX6iZTTORL6UosONZdyBJMYU7qMRiXT51lamE/zRnXSXRjyhLI5OCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-13T07:20:23.225064Z"},"content_sha256":"c07aa9346a1e953a77539c3173d4d0901db29bacd558cab92a1496eb71d6a8db","schema_version":"1.0","event_id":"sha256:c07aa9346a1e953a77539c3173d4d0901db29bacd558cab92a1496eb71d6a8db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/bundle.json","state_url":"https://pith.science/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/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":"2026-07-13T07:20:23Z","links":{"resolver":"https://pith.science/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN","bundle":"https://pith.science/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/bundle.json","state":"https://pith.science/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AT3X7SGXMC7QVUG4IB3FOUSOAN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:AT3X7SGXMC7QVUG4IB3FOUSOAN","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":"e84ed5d0031d788f5dc693a3f4848adc8d98c37b5416f30644c87efcea460eff","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-04-18T13:58:16Z","title_canon_sha256":"64b42b81f78d5e8184038bd08b35a6d7ab68e1410afd3efc62db32c126774f0b"},"schema_version":"1.0","source":{"id":"2504.13699","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.13699","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"arxiv_version","alias_value":"2504.13699v1","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.13699","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_12","alias_value":"AT3X7SGXMC7Q","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_16","alias_value":"AT3X7SGXMC7QVUG4","created_at":"2026-07-05T11:45:33Z"},{"alias_kind":"pith_short_8","alias_value":"AT3X7SGX","created_at":"2026-07-05T11:45:33Z"}],"graph_snapshots":[{"event_id":"sha256:c07aa9346a1e953a77539c3173d4d0901db29bacd558cab92a1496eb71d6a8db","target":"graph","created_at":"2026-07-05T11:45:33Z","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/2504.13699/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In a linear radio-frequency (rf) ion trap, the rf null is the point of zero electric field in the dynamic trapping potential where the ion motion is approximately harmonic. When displaced from the rf null, the ion is superimposed by fast oscillations known as micromotion, which can be probed through motion-sensitive light-atom interactions. In this work, we report on the emergence of the rf pseudo-null, a locus of points where the ion responds to light as if it were at the true rf null, despite being displaced from it. The phenomenon is fully explained by accounting for the general two-dimensi","authors_text":"Beomgeun Cho, Chiyoon Kim, Daun Chung, Hosung Shon, Jaehun You, Jeonghyun Park, Jiyong Kang, KwangYeul Choi, Kyungmin Lee, Seungwoo Yoo, Suhan Kim, Taehyun Kim, Uihwan Jeong, Woojun Lee, Yonghwan Cha","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-04-18T13:58:16Z","title":"Radio-Frequency Pseudo-Null Induced by Light in an Ion Trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.13699","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":"sha256:118a7dc68d9af236054a023115332b95f42e3c7d212f61320d3a5c726cc3f92f","target":"record","created_at":"2026-07-05T11:45:33Z","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":"e84ed5d0031d788f5dc693a3f4848adc8d98c37b5416f30644c87efcea460eff","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.atom-ph","submitted_at":"2025-04-18T13:58:16Z","title_canon_sha256":"64b42b81f78d5e8184038bd08b35a6d7ab68e1410afd3efc62db32c126774f0b"},"schema_version":"1.0","source":{"id":"2504.13699","kind":"arxiv","version":1}},"canonical_sha256":"04f77fc8d760bf0ad0dc407657524e036ac24d1ec885005104ea85799edd292b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"04f77fc8d760bf0ad0dc407657524e036ac24d1ec885005104ea85799edd292b","first_computed_at":"2026-07-05T11:45:33.801193Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:45:33.801193Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ksgSW22VkCEaRKHjEvtTT3yL4PbdVNNVnBdoJ9+HwDjkIh68J4tovyWGj2e6EjF7aeHpP2GqDn66O7dsItDUDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:45:33.801717Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.13699","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:118a7dc68d9af236054a023115332b95f42e3c7d212f61320d3a5c726cc3f92f","sha256:c07aa9346a1e953a77539c3173d4d0901db29bacd558cab92a1496eb71d6a8db"],"state_sha256":"ab4b8225168b1cdf8c4377b9da962928b31432bf4aed3c1008c5f1e84ca118ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RhyNu/iQaIzKhYW+FvJpvcZnmszr0VAvaSN4SOxHJY6eZa+nm7/yeZ1QUHsK2lbUKorLvRh0zn0iZSETLNYjBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-13T07:20:23.227276Z","bundle_sha256":"0aee7cfffa80838f67bff06ec505e14cefbef069a2907a1dce83466170b29f40"}}