{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:ETGOMGWIUTHXWDCPZGOBBIJ2WF","short_pith_number":"pith:ETGOMGWI","schema_version":"1.0","canonical_sha256":"24cce61ac8a4cf7b0c4fc99c10a13ab163cad494fb555aea6bafa881b14874b2","source":{"kind":"arxiv","id":"1502.00607","version":2},"attestation_state":"computed","paper":{"title":"Heisenberg-limited qubit readout with two-mode squeezed light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Aashish A. Clerk, Alexandre Blais, Archana Kamal, Nicolas Didier, William D. Oliver","submitted_at":"2015-02-02T20:17:23Z","abstract_excerpt":"We show how to use two-mode squeezed light to exponentially enhance cavity-based dispersive qubit measurement. Our scheme enables true Heisenberg-limited scaling of the measurement, and crucially, is not restricted to small dispersive couplings or unrealistically long measurement times. It involves coupling a qubit dispersively to two cavities, and making use of a symmetry in the dynamics of joint cavity quadratures (a so-called quantum-mechanics-free subsystem). We discuss the basic scaling of the scheme and its robustness against imperfections, as well as a realistic implementation in circui"},"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":"1502.00607","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-02T20:17:23Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"bb45d4b582ce31628546fc42a924dced7906dd9f2d6e2952eccaedc666728611","abstract_canon_sha256":"08c7cf4914e069aa066fb2dafce6c9f7fcbb2c2b82fef442ced35a49fc42e740"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:34:37.915809Z","signature_b64":"I9hdGSGuRt76BrAw2kipLyFGQ4ASWOSaK5uSNHrRbw2JLe+IH6YsaxIRguFs2vcvjSFUJ8g1D+xTDHPmSfVfAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24cce61ac8a4cf7b0c4fc99c10a13ab163cad494fb555aea6bafa881b14874b2","last_reissued_at":"2026-05-18T01:34:37.915126Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:34:37.915126Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Heisenberg-limited qubit readout with two-mode squeezed light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Aashish A. Clerk, Alexandre Blais, Archana Kamal, Nicolas Didier, William D. Oliver","submitted_at":"2015-02-02T20:17:23Z","abstract_excerpt":"We show how to use two-mode squeezed light to exponentially enhance cavity-based dispersive qubit measurement. Our scheme enables true Heisenberg-limited scaling of the measurement, and crucially, is not restricted to small dispersive couplings or unrealistically long measurement times. It involves coupling a qubit dispersively to two cavities, and making use of a symmetry in the dynamics of joint cavity quadratures (a so-called quantum-mechanics-free subsystem). We discuss the basic scaling of the scheme and its robustness against imperfections, as well as a realistic implementation in circui"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.00607","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"1502.00607","created_at":"2026-05-18T01:34:37.915247+00:00"},{"alias_kind":"arxiv_version","alias_value":"1502.00607v2","created_at":"2026-05-18T01:34:37.915247+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.00607","created_at":"2026-05-18T01:34:37.915247+00:00"},{"alias_kind":"pith_short_12","alias_value":"ETGOMGWIUTHX","created_at":"2026-05-18T12:29:19.899920+00:00"},{"alias_kind":"pith_short_16","alias_value":"ETGOMGWIUTHXWDCP","created_at":"2026-05-18T12:29:19.899920+00:00"},{"alias_kind":"pith_short_8","alias_value":"ETGOMGWI","created_at":"2026-05-18T12:29:19.899920+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/ETGOMGWIUTHXWDCPZGOBBIJ2WF","json":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF.json","graph_json":"https://pith.science/api/pith-number/ETGOMGWIUTHXWDCPZGOBBIJ2WF/graph.json","events_json":"https://pith.science/api/pith-number/ETGOMGWIUTHXWDCPZGOBBIJ2WF/events.json","paper":"https://pith.science/paper/ETGOMGWI"},"agent_actions":{"view_html":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF","download_json":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF.json","view_paper":"https://pith.science/paper/ETGOMGWI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1502.00607&json=true","fetch_graph":"https://pith.science/api/pith-number/ETGOMGWIUTHXWDCPZGOBBIJ2WF/graph.json","fetch_events":"https://pith.science/api/pith-number/ETGOMGWIUTHXWDCPZGOBBIJ2WF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF/action/storage_attestation","attest_author":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF/action/author_attestation","sign_citation":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF/action/citation_signature","submit_replication":"https://pith.science/pith/ETGOMGWIUTHXWDCPZGOBBIJ2WF/action/replication_record"}},"created_at":"2026-05-18T01:34:37.915247+00:00","updated_at":"2026-05-18T01:34:37.915247+00:00"}