{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:OL2LLM3MIZO7U2BDV5MRLWF37X","short_pith_number":"pith:OL2LLM3M","canonical_record":{"source":{"id":"2401.03617","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2024-01-08T01:11:17Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"9e04359fd5bb46d078c041bb26eab5ea8158f5238b0c409982ce74c040025556","abstract_canon_sha256":"fc6c9545f07abf6de513d0f6e8201efc3e9764c91b205893ca92284d97f3f8b5"},"schema_version":"1.0"},"canonical_sha256":"72f4b5b36c465dfa6823af5915d8bbfddc96185143a293e8a0d640869bdca24d","source":{"kind":"arxiv","id":"2401.03617","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.03617","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"2401.03617v1","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.03617","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"OL2LLM3MIZO7","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_16","alias_value":"OL2LLM3MIZO7U2BD","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_8","alias_value":"OL2LLM3M","created_at":"2026-07-05T07:31:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:OL2LLM3MIZO7U2BDV5MRLWF37X","target":"record","payload":{"canonical_record":{"source":{"id":"2401.03617","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2024-01-08T01:11:17Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"9e04359fd5bb46d078c041bb26eab5ea8158f5238b0c409982ce74c040025556","abstract_canon_sha256":"fc6c9545f07abf6de513d0f6e8201efc3e9764c91b205893ca92284d97f3f8b5"},"schema_version":"1.0"},"canonical_sha256":"72f4b5b36c465dfa6823af5915d8bbfddc96185143a293e8a0d640869bdca24d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:31:11.641505Z","signature_b64":"jmdsrKrqF4AJGWUERbvdiOWVJcMKe7Pz2J4wTodCPhUXL/RX4vrAF3yTm7T+lJ2tsfGdCRUalQuSFuaVi6AZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72f4b5b36c465dfa6823af5915d8bbfddc96185143a293e8a0d640869bdca24d","last_reissued_at":"2026-07-05T07:31:11.641050Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:31:11.641050Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2401.03617","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":"2026-07-05T07:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LFhvIrffuElFIp9Hpp8o5uGtxPd7MMoLHcNzXkofYIiXVHM/8rFt00tMkIQQS5Jeg10yyKOAq70ZW558rA1MDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T00:09:22.865948Z"},"content_sha256":"3d76d8a8b78c6a33e97ea3905b26a98d04cb3df92f88881d7a5ddece870a577f","schema_version":"1.0","event_id":"sha256:3d76d8a8b78c6a33e97ea3905b26a98d04cb3df92f88881d7a5ddece870a577f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:OL2LLM3MIZO7U2BDV5MRLWF37X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast and high-fidelity dispersive readout of a spin qubit via squeezing and resonator nonlinearity","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Chon-Fai Kam, Xuedong Hu","submitted_at":"2024-01-08T01:11:17Z","abstract_excerpt":"Fast and high-fidelity qubit measurement is crucial for achieving quantum error correction, a fundamental element in the development of universal quantum computing. For electron spin qubits, fast readout stands out as a major obstacle in the pursuit of error correction. In this work, we explore the dispersive measurement of an individual spin in a semiconductor double quantum dot coupled to a nonlinear microwave resonator. By utilizing displaced squeezed vacuum states, we achieve rapid and high-fidelity readout for semiconductor spin qubits. Our findings reveal that introducing modest squeezin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.03617","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/2401.03617/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":"2026-07-05T07:31:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jRlniNXsql3GguigOJb3woMNFUNCgjglofUWlLHi1Gne2EqWjbUTIEsl6lMT5rQb3P/2PJRluJbjT3bisQzsAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T00:09:22.866538Z"},"content_sha256":"55cd509260b497aebad8673e953192fe65e743d26a75b724dc55769643656d82","schema_version":"1.0","event_id":"sha256:55cd509260b497aebad8673e953192fe65e743d26a75b724dc55769643656d82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/bundle.json","state_url":"https://pith.science/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/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":"2026-08-14T00:09:22Z","links":{"resolver":"https://pith.science/pith/OL2LLM3MIZO7U2BDV5MRLWF37X","bundle":"https://pith.science/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/bundle.json","state":"https://pith.science/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OL2LLM3MIZO7U2BDV5MRLWF37X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:OL2LLM3MIZO7U2BDV5MRLWF37X","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":"fc6c9545f07abf6de513d0f6e8201efc3e9764c91b205893ca92284d97f3f8b5","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2024-01-08T01:11:17Z","title_canon_sha256":"9e04359fd5bb46d078c041bb26eab5ea8158f5238b0c409982ce74c040025556"},"schema_version":"1.0","source":{"id":"2401.03617","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2401.03617","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"arxiv_version","alias_value":"2401.03617v1","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2401.03617","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_12","alias_value":"OL2LLM3MIZO7","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_16","alias_value":"OL2LLM3MIZO7U2BD","created_at":"2026-07-05T07:31:11Z"},{"alias_kind":"pith_short_8","alias_value":"OL2LLM3M","created_at":"2026-07-05T07:31:11Z"}],"graph_snapshots":[{"event_id":"sha256:55cd509260b497aebad8673e953192fe65e743d26a75b724dc55769643656d82","target":"graph","created_at":"2026-07-05T07:31:11Z","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/2401.03617/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fast and high-fidelity qubit measurement is crucial for achieving quantum error correction, a fundamental element in the development of universal quantum computing. For electron spin qubits, fast readout stands out as a major obstacle in the pursuit of error correction. In this work, we explore the dispersive measurement of an individual spin in a semiconductor double quantum dot coupled to a nonlinear microwave resonator. By utilizing displaced squeezed vacuum states, we achieve rapid and high-fidelity readout for semiconductor spin qubits. Our findings reveal that introducing modest squeezin","authors_text":"Chon-Fai Kam, Xuedong Hu","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2024-01-08T01:11:17Z","title":"Fast and high-fidelity dispersive readout of a spin qubit via squeezing and resonator nonlinearity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.03617","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":"sha256:3d76d8a8b78c6a33e97ea3905b26a98d04cb3df92f88881d7a5ddece870a577f","target":"record","created_at":"2026-07-05T07:31:11Z","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":"fc6c9545f07abf6de513d0f6e8201efc3e9764c91b205893ca92284d97f3f8b5","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2024-01-08T01:11:17Z","title_canon_sha256":"9e04359fd5bb46d078c041bb26eab5ea8158f5238b0c409982ce74c040025556"},"schema_version":"1.0","source":{"id":"2401.03617","kind":"arxiv","version":1}},"canonical_sha256":"72f4b5b36c465dfa6823af5915d8bbfddc96185143a293e8a0d640869bdca24d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72f4b5b36c465dfa6823af5915d8bbfddc96185143a293e8a0d640869bdca24d","first_computed_at":"2026-07-05T07:31:11.641050Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:31:11.641050Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jmdsrKrqF4AJGWUERbvdiOWVJcMKe7Pz2J4wTodCPhUXL/RX4vrAF3yTm7T+lJ2tsfGdCRUalQuSFuaVi6AZDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:31:11.641505Z","signed_message":"canonical_sha256_bytes"},"source_id":"2401.03617","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3d76d8a8b78c6a33e97ea3905b26a98d04cb3df92f88881d7a5ddece870a577f","sha256:55cd509260b497aebad8673e953192fe65e743d26a75b724dc55769643656d82"],"state_sha256":"1ca3de1f2e809ff903a5dfe84798a907ac00da34838071bc22437155cb1eed99"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BbhMWOn4TwwWUStND887QFuh49u4vJnsQzSxsXkpgzttFqSvAJBROX2p0Mr7CUnfjtDr7DM0CwjnoooKeriQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T00:09:22.883353Z","bundle_sha256":"bb109851b049cf4bd01ee760b11a9aa885b1a7922df67500454b6d845ebc2dc9"}}