{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:KUHMJOMLXHHMEFCUZQLPZTDZCG","short_pith_number":"pith:KUHMJOML","schema_version":"1.0","canonical_sha256":"550ec4b98bb9cec21454cc16fccc7911bb1396973a8e36dc476bd125cb6f809c","source":{"kind":"arxiv","id":"2601.11245","version":3},"attestation_state":"computed","paper":{"title":"Concatenated continuous driving of silicon qubit by amplitude and phase modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Simultaneous amplitude and phase modulation in concatenated driving cancels the counter-rotating term and raises silicon qubit gate fidelity.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andrew J. Ramsay, Bart Raes, Clement Godfrin, Danny Wan, Digh Hisamoto, Hideo Arimoto, Hiroyuki Mizuno, Itaru Yanagi, Julien Jussot, Kristiaan De Greve, Nobuhiro Kusuno, Noriyuki Lee, Normann Mertig, Roger Loo, Ryuta Tsuchiya, Shinichi Saito, Sofie Beyne, Stefan Kubicek, Sylvain Baudot, Takeru Utsugi, Takuma Kuno, Tetsuo Kodera, Toshiyuki Mine, Yann Canvel, Yosuke Shimura","submitted_at":"2026-01-16T12:45:50Z","abstract_excerpt":"The rate of coherence loss is lower for a qubit under the Rabi drive than a freely evolving qubit $T_{2}^{\\rm{Rabi}}>T_{2}^*$.\n  Building on this principle, concatenated continuous driving (CCD) keeps the qubit under continuous drive to suppress noise and manipulate dressed states by either phase or amplitude modulation.\n  In this work, we propose a variant of CCD which simultaneously modulates both the amplitude and phase of the driving field to generate a circularly polarized field in the rotating frame of the carrier frequency.\n  This circular-modulated CCD(CMCCD) cancels the counter-rotati"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2601.11245","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-01-16T12:45:50Z","cross_cats_sorted":[],"title_canon_sha256":"a83cb67eb9e0f7c10c159dbad5d97d16067d9782764fe3f3523b60769f75f08c","abstract_canon_sha256":"6f99ecfe42a427d748d3f75e713f7e0afd4962868d4903c07b670bfb476fa8ef"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:04:22.443508Z","signature_b64":"mjNz3qhoWqGpz6dBDwuTB4DebUJcLijP7Ku2P5LPNm2rXeGNkNgRx6qvwR4+AwGgfiQp7zN8rOTMd6fzxd+8Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"550ec4b98bb9cec21454cc16fccc7911bb1396973a8e36dc476bd125cb6f809c","last_reissued_at":"2026-05-20T00:04:22.442610Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:04:22.442610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Concatenated continuous driving of silicon qubit by amplitude and phase modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Simultaneous amplitude and phase modulation in concatenated driving cancels the counter-rotating term and raises silicon qubit gate fidelity.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andrew J. Ramsay, Bart Raes, Clement Godfrin, Danny Wan, Digh Hisamoto, Hideo Arimoto, Hiroyuki Mizuno, Itaru Yanagi, Julien Jussot, Kristiaan De Greve, Nobuhiro Kusuno, Noriyuki Lee, Normann Mertig, Roger Loo, Ryuta Tsuchiya, Shinichi Saito, Sofie Beyne, Stefan Kubicek, Sylvain Baudot, Takeru Utsugi, Takuma Kuno, Tetsuo Kodera, Toshiyuki Mine, Yann Canvel, Yosuke Shimura","submitted_at":"2026-01-16T12:45:50Z","abstract_excerpt":"The rate of coherence loss is lower for a qubit under the Rabi drive than a freely evolving qubit $T_{2}^{\\rm{Rabi}}>T_{2}^*$.\n  Building on this principle, concatenated continuous driving (CCD) keeps the qubit under continuous drive to suppress noise and manipulate dressed states by either phase or amplitude modulation.\n  In this work, we propose a variant of CCD which simultaneously modulates both the amplitude and phase of the driving field to generate a circularly polarized field in the rotating frame of the carrier frequency.\n  This circular-modulated CCD(CMCCD) cancels the counter-rotati"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Numerical simulations demonstrate that the proposed CMCCD achieves higher gate fidelity than conventional CCD schemes. We further implement and compare different CCD protocols using an electron spin-qubit in an isotopically purified 28Si-MOS quantum dot and evaluate its robustness by applying static detuning and Rabi frequency errors. The robustness is significantly improved compared to standard Rabi-drive.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The assumption that the simultaneous amplitude and phase modulation can be realized with sufficient precision and without introducing additional high-frequency noise or calibration errors that would offset the theoretical cancellation of the counter-rotating term.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"CM-CCD cancels the counter-rotating term via dual amplitude-phase modulation, yielding higher gate fidelity and improved robustness to static errors in a 28Si-MOS quantum-dot spin qubit.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Simultaneous amplitude and phase modulation in concatenated driving cancels the counter-rotating term and raises silicon qubit gate fidelity.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"9e61c8a8e218a285745ce0c7ac449e1836e0f3c4e311c9ba0742da434726e3ca"},"source":{"id":"2601.11245","kind":"arxiv","version":3},"verdict":{"id":"cacd5d3e-f457-487f-acef-6ddf75e117e9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-16T13:38:24.095345Z","strongest_claim":"Numerical simulations demonstrate that the proposed CMCCD achieves higher gate fidelity than conventional CCD schemes. We further implement and compare different CCD protocols using an electron spin-qubit in an isotopically purified 28Si-MOS quantum dot and evaluate its robustness by applying static detuning and Rabi frequency errors. The robustness is significantly improved compared to standard Rabi-drive.","one_line_summary":"CM-CCD cancels the counter-rotating term via dual amplitude-phase modulation, yielding higher gate fidelity and improved robustness to static errors in a 28Si-MOS quantum-dot spin qubit.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The assumption that the simultaneous amplitude and phase modulation can be realized with sufficient precision and without introducing additional high-frequency noise or calibration errors that would offset the theoretical cancellation of the counter-rotating term.","pith_extraction_headline":"Simultaneous amplitude and phase modulation in concatenated driving cancels the counter-rotating term and raises silicon qubit gate fidelity."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2601.11245/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2601.11245","created_at":"2026-05-20T00:04:22.442767+00:00"},{"alias_kind":"arxiv_version","alias_value":"2601.11245v3","created_at":"2026-05-20T00:04:22.442767+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.11245","created_at":"2026-05-20T00:04:22.442767+00:00"},{"alias_kind":"pith_short_12","alias_value":"KUHMJOMLXHHM","created_at":"2026-05-20T00:04:22.442767+00:00"},{"alias_kind":"pith_short_16","alias_value":"KUHMJOMLXHHMEFCU","created_at":"2026-05-20T00:04:22.442767+00:00"},{"alias_kind":"pith_short_8","alias_value":"KUHMJOML","created_at":"2026-05-20T00:04:22.442767+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG","json":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG.json","graph_json":"https://pith.science/api/pith-number/KUHMJOMLXHHMEFCUZQLPZTDZCG/graph.json","events_json":"https://pith.science/api/pith-number/KUHMJOMLXHHMEFCUZQLPZTDZCG/events.json","paper":"https://pith.science/paper/KUHMJOML"},"agent_actions":{"view_html":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG","download_json":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG.json","view_paper":"https://pith.science/paper/KUHMJOML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2601.11245&json=true","fetch_graph":"https://pith.science/api/pith-number/KUHMJOMLXHHMEFCUZQLPZTDZCG/graph.json","fetch_events":"https://pith.science/api/pith-number/KUHMJOMLXHHMEFCUZQLPZTDZCG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG/action/storage_attestation","attest_author":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG/action/author_attestation","sign_citation":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG/action/citation_signature","submit_replication":"https://pith.science/pith/KUHMJOMLXHHMEFCUZQLPZTDZCG/action/replication_record"}},"created_at":"2026-05-20T00:04:22.442767+00:00","updated_at":"2026-05-20T00:04:22.442767+00:00"}