{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:HPK4QFFFUOMWTNU6WE5FFUCQHJ","short_pith_number":"pith:HPK4QFFF","canonical_record":{"source":{"id":"2510.26749","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-10-30T17:42:06Z","cross_cats_sorted":[],"title_canon_sha256":"251f8ced030b713bbf50a3b3b16d95b8b4fc6ae837a0f92404e2a0abaf097631","abstract_canon_sha256":"8f57b74f41d2616c4cfde0cc0bb6d125e882b47e63d5638a7a543078f8f4c6f3"},"schema_version":"1.0"},"canonical_sha256":"3bd5c814a5a39969b69eb13a52d0503a4770cd424dc4b744f9bd885b6a8922b1","source":{"kind":"arxiv","id":"2510.26749","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.26749","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"2510.26749v1","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.26749","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"HPK4QFFFUOMW","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_16","alias_value":"HPK4QFFFUOMWTNU6","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_8","alias_value":"HPK4QFFF","created_at":"2026-07-09T01:19:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:HPK4QFFFUOMWTNU6WE5FFUCQHJ","target":"record","payload":{"canonical_record":{"source":{"id":"2510.26749","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-10-30T17:42:06Z","cross_cats_sorted":[],"title_canon_sha256":"251f8ced030b713bbf50a3b3b16d95b8b4fc6ae837a0f92404e2a0abaf097631","abstract_canon_sha256":"8f57b74f41d2616c4cfde0cc0bb6d125e882b47e63d5638a7a543078f8f4c6f3"},"schema_version":"1.0"},"canonical_sha256":"3bd5c814a5a39969b69eb13a52d0503a4770cd424dc4b744f9bd885b6a8922b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-09T01:19:48.622846Z","signature_b64":"dV3GkVAt+RzpAUtPBnLpQZ+exyD8jY7UefHPjXo3mVJWthxy57bLpaJFTsvzfp73U2evwpiktzZob+0a2ONrCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bd5c814a5a39969b69eb13a52d0503a4770cd424dc4b744f9bd885b6a8922b1","last_reissued_at":"2026-07-09T01:19:48.622384Z","signature_status":"signed_v1","first_computed_at":"2026-07-09T01:19:48.622384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2510.26749","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":"2026-07-09T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KE1GjhgjTLsBUDIMlMkoGOiblncRpVKPoCxxXJOJJPV1xn90ieT/juWJy1TZBpKwNe9eUEekAri467VXSCucBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T01:27:24.725893Z"},"content_sha256":"351ecaf1e2b24de2db870e99dd64343deb4da27bfe5445026eb5595cb79088a5","schema_version":"1.0","event_id":"sha256:351ecaf1e2b24de2db870e99dd64343deb4da27bfe5445026eb5595cb79088a5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:HPK4QFFFUOMWTNU6WE5FFUCQHJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tunable frequency conversion and comb generation with a superconducting artificial atom","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anton Frisk Kockum, Ching-Yeh Chen, Fahad Aziz, Guin-Dar Lin, Io-Chun Hoi, Jeng-Chung Chen, Kai-Min Hsieh, Kuan Ting Lin, Ping-Yi Wen, Tzu-Yen Hsieh, Yen-Hsiang Lin, Yu-Huan Huang, Yu-Ting Cheng, Zhengqi Niu, Zhi-Rong Lin","submitted_at":"2025-10-30T17:42:06Z","abstract_excerpt":"We investigate the power spectral density emitted by a superconducting artificial atom coupled to the end of a semi-infinite transmission line and driven by two continuous radio-frequency fields. In this setup, we observe the generation of multiple frequency peaks and the formation of frequency combs with equal detuning between those peaks. The frequency peaks originate from wave mixing of the drive fields, mediated by the artificial atom, highlighting the potential of this system as both a frequency converter and a frequency-comb generator. We demonstrate precise control and tunability in gen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.26749","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/2510.26749/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":"2026-07-09T01:19:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Xmx0kIhLkjQsSlG6iADwhb4qLf1Xq4QREwiMycixA772c8VvRG9nE9df7guOXNQYVyswplikw/wFwlrecAqPDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T01:27:24.726799Z"},"content_sha256":"d46103fe0a6ebb710aa5edb97e9b29313f403842fbffec4e356d6ba750389aac","schema_version":"1.0","event_id":"sha256:d46103fe0a6ebb710aa5edb97e9b29313f403842fbffec4e356d6ba750389aac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/bundle.json","state_url":"https://pith.science/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/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":"2026-08-05T01:27:24Z","links":{"resolver":"https://pith.science/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ","bundle":"https://pith.science/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/bundle.json","state":"https://pith.science/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HPK4QFFFUOMWTNU6WE5FFUCQHJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:HPK4QFFFUOMWTNU6WE5FFUCQHJ","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":"8f57b74f41d2616c4cfde0cc0bb6d125e882b47e63d5638a7a543078f8f4c6f3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-10-30T17:42:06Z","title_canon_sha256":"251f8ced030b713bbf50a3b3b16d95b8b4fc6ae837a0f92404e2a0abaf097631"},"schema_version":"1.0","source":{"id":"2510.26749","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.26749","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"arxiv_version","alias_value":"2510.26749v1","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.26749","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_12","alias_value":"HPK4QFFFUOMW","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_16","alias_value":"HPK4QFFFUOMWTNU6","created_at":"2026-07-09T01:19:48Z"},{"alias_kind":"pith_short_8","alias_value":"HPK4QFFF","created_at":"2026-07-09T01:19:48Z"}],"graph_snapshots":[{"event_id":"sha256:d46103fe0a6ebb710aa5edb97e9b29313f403842fbffec4e356d6ba750389aac","target":"graph","created_at":"2026-07-09T01:19:48Z","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/2510.26749/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the power spectral density emitted by a superconducting artificial atom coupled to the end of a semi-infinite transmission line and driven by two continuous radio-frequency fields. In this setup, we observe the generation of multiple frequency peaks and the formation of frequency combs with equal detuning between those peaks. The frequency peaks originate from wave mixing of the drive fields, mediated by the artificial atom, highlighting the potential of this system as both a frequency converter and a frequency-comb generator. We demonstrate precise control and tunability in gen","authors_text":"Anton Frisk Kockum, Ching-Yeh Chen, Fahad Aziz, Guin-Dar Lin, Io-Chun Hoi, Jeng-Chung Chen, Kai-Min Hsieh, Kuan Ting Lin, Ping-Yi Wen, Tzu-Yen Hsieh, Yen-Hsiang Lin, Yu-Huan Huang, Yu-Ting Cheng, Zhengqi Niu, Zhi-Rong Lin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-10-30T17:42:06Z","title":"Tunable frequency conversion and comb generation with a superconducting artificial atom"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.26749","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":"sha256:351ecaf1e2b24de2db870e99dd64343deb4da27bfe5445026eb5595cb79088a5","target":"record","created_at":"2026-07-09T01:19:48Z","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":"8f57b74f41d2616c4cfde0cc0bb6d125e882b47e63d5638a7a543078f8f4c6f3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-10-30T17:42:06Z","title_canon_sha256":"251f8ced030b713bbf50a3b3b16d95b8b4fc6ae837a0f92404e2a0abaf097631"},"schema_version":"1.0","source":{"id":"2510.26749","kind":"arxiv","version":1}},"canonical_sha256":"3bd5c814a5a39969b69eb13a52d0503a4770cd424dc4b744f9bd885b6a8922b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3bd5c814a5a39969b69eb13a52d0503a4770cd424dc4b744f9bd885b6a8922b1","first_computed_at":"2026-07-09T01:19:48.622384Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-09T01:19:48.622384Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dV3GkVAt+RzpAUtPBnLpQZ+exyD8jY7UefHPjXo3mVJWthxy57bLpaJFTsvzfp73U2evwpiktzZob+0a2ONrCg==","signature_status":"signed_v1","signed_at":"2026-07-09T01:19:48.622846Z","signed_message":"canonical_sha256_bytes"},"source_id":"2510.26749","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:351ecaf1e2b24de2db870e99dd64343deb4da27bfe5445026eb5595cb79088a5","sha256:d46103fe0a6ebb710aa5edb97e9b29313f403842fbffec4e356d6ba750389aac"],"state_sha256":"405b6eada2b8a24120842aa77ced9c8a1ae88efa89c45949889cc371ff07bb83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ZdY/5V2TuSYa61dy9xUUy3nJ9Y33wdVechzW7gPWlUq3RwBWcySQYKggo9JafImLeEwzjFnjxcfratUSgJ7CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T01:27:24.732243Z","bundle_sha256":"ff002d46abd1b70c53596d1d1e967a0d5f010fa217d3e7c5a0c9a33675fd26a9"}}