{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:LAOVNLUOX6RFA7VC5FYHJBUW4M","short_pith_number":"pith:LAOVNLUO","schema_version":"1.0","canonical_sha256":"581d56ae8ebfa2507ea2e970748696e300dcffa1e90b4aa8afceef1355ad4903","source":{"kind":"arxiv","id":"2111.00736","version":1},"attestation_state":"computed","paper":{"title":"Improved superconducting qubit state readout by path interference","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cheng Ma, Hongyi Zhang, Luming Duan, Tianqi Cai, Yan Li, Yipu Song, Yukai Wu, Zenghui Bao, Zhiling Wang","submitted_at":"2021-11-01T07:22:11Z","abstract_excerpt":"High fidelity single shot qubit state readout is essential for many quantum information processing protocols. In superconducting quantum circuit, the qubit state is usually determined by detecting the dispersive frequency shift of a microwave cavity from either transmission or reflection. In this paper, we demonstrate the use of constructive interference between the transmitted and reflected signal to optimize the qubit state readout, with which we find a better resolved state discrimination and an improved qubit readout fidelity. As a simple and convenient approach, our scheme can be combined"},"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":"2111.00736","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-11-01T07:22:11Z","cross_cats_sorted":[],"title_canon_sha256":"10452cbe85a72c88208f83e617dd3ee26d0f54088bd34488bc69162eab4db0a3","abstract_canon_sha256":"b9aa7ad51fb9607c4ce9732985a8b4af0f4164e1c45342603206645690ceda9a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:27:49.119758Z","signature_b64":"CyEJ3BGLCrJ9xmZMnRQOxxmnGtuKK9W3cydhYoDw+Ch+TQVx+oeEvu0OSsHvClFLE0YhXxaE2tk8M3MPEHlUBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"581d56ae8ebfa2507ea2e970748696e300dcffa1e90b4aa8afceef1355ad4903","last_reissued_at":"2026-07-05T03:27:49.119346Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:27:49.119346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Improved superconducting qubit state readout by path interference","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cheng Ma, Hongyi Zhang, Luming Duan, Tianqi Cai, Yan Li, Yipu Song, Yukai Wu, Zenghui Bao, Zhiling Wang","submitted_at":"2021-11-01T07:22:11Z","abstract_excerpt":"High fidelity single shot qubit state readout is essential for many quantum information processing protocols. In superconducting quantum circuit, the qubit state is usually determined by detecting the dispersive frequency shift of a microwave cavity from either transmission or reflection. In this paper, we demonstrate the use of constructive interference between the transmitted and reflected signal to optimize the qubit state readout, with which we find a better resolved state discrimination and an improved qubit readout fidelity. As a simple and convenient approach, our scheme can be combined"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.00736","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/2111.00736/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":"2111.00736","created_at":"2026-07-05T03:27:49.119400+00:00"},{"alias_kind":"arxiv_version","alias_value":"2111.00736v1","created_at":"2026-07-05T03:27:49.119400+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.00736","created_at":"2026-07-05T03:27:49.119400+00:00"},{"alias_kind":"pith_short_12","alias_value":"LAOVNLUOX6RF","created_at":"2026-07-05T03:27:49.119400+00:00"},{"alias_kind":"pith_short_16","alias_value":"LAOVNLUOX6RFA7VC","created_at":"2026-07-05T03:27:49.119400+00:00"},{"alias_kind":"pith_short_8","alias_value":"LAOVNLUO","created_at":"2026-07-05T03:27:49.119400+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/LAOVNLUOX6RFA7VC5FYHJBUW4M","json":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M.json","graph_json":"https://pith.science/api/pith-number/LAOVNLUOX6RFA7VC5FYHJBUW4M/graph.json","events_json":"https://pith.science/api/pith-number/LAOVNLUOX6RFA7VC5FYHJBUW4M/events.json","paper":"https://pith.science/paper/LAOVNLUO"},"agent_actions":{"view_html":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M","download_json":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M.json","view_paper":"https://pith.science/paper/LAOVNLUO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2111.00736&json=true","fetch_graph":"https://pith.science/api/pith-number/LAOVNLUOX6RFA7VC5FYHJBUW4M/graph.json","fetch_events":"https://pith.science/api/pith-number/LAOVNLUOX6RFA7VC5FYHJBUW4M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M/action/storage_attestation","attest_author":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M/action/author_attestation","sign_citation":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M/action/citation_signature","submit_replication":"https://pith.science/pith/LAOVNLUOX6RFA7VC5FYHJBUW4M/action/replication_record"}},"created_at":"2026-07-05T03:27:49.119400+00:00","updated_at":"2026-07-05T03:27:49.119400+00:00"}