{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:PVANNIZHGQIFYZOG4BARKDPVQR","short_pith_number":"pith:PVANNIZH","schema_version":"1.0","canonical_sha256":"7d40d6a32734105c65c6e041150df5845b8c3af9501b0a92189847713216352b","source":{"kind":"arxiv","id":"2608.13530","version":1},"attestation_state":"computed","paper":{"title":"Inductively-protected Andreev (IPA) spin qubit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.supr-con","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Levy Yeyati, F. J. Matute-Ca\\~nadas, J. L. del Olmo N., R. Aguado, R. Seoane Souto","submitted_at":"2026-08-13T17:47:31Z","abstract_excerpt":"The spin of a quasiparticle trapped in a quantum dot Josephson junction forms the basis of an Andreev spin qubit (ASQ): a semiconductor-superconductor device where the interplay between a localized spin degree of freedom and superconductivity leads to a spin-resolved Josephson potential. In this work, we show that shunting an ASQ with a linear inductor enhances its relaxation time by separating the spin-qubit states into distinct potential wells in phase space, nearly eliminating wavefunction overlap. The resulting inductively protected Andreev (IPA) spin qubit is equivalent to two fluxoniums "},"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":"2608.13530","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-08-13T17:47:31Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"f5eb4dcd149483200d670eedfdf30e398580d261f384228e90c8599ecfb23d1b","abstract_canon_sha256":"0c5f2268f440dfdaaa80cde91e3387545fa5fdbdb9c06ae184f97a2dc45c4456"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-14T01:24:58.503721Z","signature_b64":"UPheah7OcnyhmY1fDjxL1YB26dQgaCjDm9fM1+LhRL8+bUIliSbBj9EaNahNhB8O/wT1HVSCRuJ3s/puBqxzAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d40d6a32734105c65c6e041150df5845b8c3af9501b0a92189847713216352b","last_reissued_at":"2026-08-14T01:24:58.501448Z","signature_status":"signed_v1","first_computed_at":"2026-08-14T01:24:58.501448Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Inductively-protected Andreev (IPA) spin qubit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.supr-con","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Levy Yeyati, F. J. Matute-Ca\\~nadas, J. L. del Olmo N., R. Aguado, R. Seoane Souto","submitted_at":"2026-08-13T17:47:31Z","abstract_excerpt":"The spin of a quasiparticle trapped in a quantum dot Josephson junction forms the basis of an Andreev spin qubit (ASQ): a semiconductor-superconductor device where the interplay between a localized spin degree of freedom and superconductivity leads to a spin-resolved Josephson potential. In this work, we show that shunting an ASQ with a linear inductor enhances its relaxation time by separating the spin-qubit states into distinct potential wells in phase space, nearly eliminating wavefunction overlap. The resulting inductively protected Andreev (IPA) spin qubit is equivalent to two fluxoniums "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.13530","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/2608.13530/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":"2608.13530","created_at":"2026-08-14T01:24:58.502983+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.13530v1","created_at":"2026-08-14T01:24:58.502983+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.13530","created_at":"2026-08-14T01:24:58.502983+00:00"},{"alias_kind":"pith_short_12","alias_value":"PVANNIZHGQIF","created_at":"2026-08-14T01:24:58.502983+00:00"},{"alias_kind":"pith_short_16","alias_value":"PVANNIZHGQIFYZOG","created_at":"2026-08-14T01:24:58.502983+00:00"},{"alias_kind":"pith_short_8","alias_value":"PVANNIZH","created_at":"2026-08-14T01:24:58.502983+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/PVANNIZHGQIFYZOG4BARKDPVQR","json":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR.json","graph_json":"https://pith.science/api/pith-number/PVANNIZHGQIFYZOG4BARKDPVQR/graph.json","events_json":"https://pith.science/api/pith-number/PVANNIZHGQIFYZOG4BARKDPVQR/events.json","paper":"https://pith.science/paper/PVANNIZH"},"agent_actions":{"view_html":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR","download_json":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR.json","view_paper":"https://pith.science/paper/PVANNIZH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.13530&json=true","fetch_graph":"https://pith.science/api/pith-number/PVANNIZHGQIFYZOG4BARKDPVQR/graph.json","fetch_events":"https://pith.science/api/pith-number/PVANNIZHGQIFYZOG4BARKDPVQR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR/action/storage_attestation","attest_author":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR/action/author_attestation","sign_citation":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR/action/citation_signature","submit_replication":"https://pith.science/pith/PVANNIZHGQIFYZOG4BARKDPVQR/action/replication_record"}},"created_at":"2026-08-14T01:24:58.502983+00:00","updated_at":"2026-08-14T01:24:58.502983+00:00"}