{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:B7XKB2CG47QMQQDVMVN2DGBUUC","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":"8a40ed1d6174028e3a90f3f90dcb0f733f9589daf7f76f4674584549832aa55c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-02-07T17:38:00Z","title_canon_sha256":"a8bfb5844cf1939936033f2e1f0b38afcb7e80ddd279af3c59fdada8dc838222"},"schema_version":"1.0","source":{"id":"2402.05046","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.05046","created_at":"2026-07-05T10:08:14Z"},{"alias_kind":"arxiv_version","alias_value":"2402.05046v2","created_at":"2026-07-05T10:08:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.05046","created_at":"2026-07-05T10:08:14Z"},{"alias_kind":"pith_short_12","alias_value":"B7XKB2CG47QM","created_at":"2026-07-05T10:08:14Z"},{"alias_kind":"pith_short_16","alias_value":"B7XKB2CG47QMQQDV","created_at":"2026-07-05T10:08:14Z"},{"alias_kind":"pith_short_8","alias_value":"B7XKB2CG","created_at":"2026-07-05T10:08:14Z"}],"graph_snapshots":[{"event_id":"sha256:c0bc6018417be8e1c446ec7fe4bf5057fe9050e9fe0723c10627c92064e1fe9b","target":"graph","created_at":"2026-07-05T10:08:14Z","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/2402.05046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The number of excitations in a large quantum system (harmonic oscillator or qudit) can be measured in a quantum nondemolition manner using a dispersively coupled qubit. It typically requires a series of qubit pulses that encode various binary questions about the photon number. Recently, a method based on the fluorescence measurement of a qubit driven by a train of identical pulses was introduced to track the photon number in a cavity, hence simplifying its monitoring and raising interesting questions about the measurement backaction of this scheme. A first realization with superconducting circ","authors_text":"Antoine Essig, Audrey Bienfait, Benjamin Huard, Hector Hutin, Pierre Rouchon, R\\'eouven Assouly","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-02-07T17:38:00Z","title":"Monitoring the energy of a cavity by observing the emission of a repeatedly excited qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.05046","kind":"arxiv","version":2},"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":"sha256:8b2b8f3995d55fb08b491330faaf4a0e70f73c56d2f784cb0c05060c223d5097","target":"record","created_at":"2026-07-05T10:08:14Z","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":"8a40ed1d6174028e3a90f3f90dcb0f733f9589daf7f76f4674584549832aa55c","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-02-07T17:38:00Z","title_canon_sha256":"a8bfb5844cf1939936033f2e1f0b38afcb7e80ddd279af3c59fdada8dc838222"},"schema_version":"1.0","source":{"id":"2402.05046","kind":"arxiv","version":2}},"canonical_sha256":"0feea0e846e7e0c84075655ba19834a08558750f6f049f1765e47878379340ef","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0feea0e846e7e0c84075655ba19834a08558750f6f049f1765e47878379340ef","first_computed_at":"2026-07-05T10:08:14.135923Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:08:14.135923Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DwcZP7xnzYncoIZUTg6K/Oi1z81suuK5cTJbiJufxflrPBlT6XHUFRlfsxkkIsJ7EQEFUvbN05uI20WwN9jaCw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:08:14.136348Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.05046","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b2b8f3995d55fb08b491330faaf4a0e70f73c56d2f784cb0c05060c223d5097","sha256:c0bc6018417be8e1c446ec7fe4bf5057fe9050e9fe0723c10627c92064e1fe9b"],"state_sha256":"31279b583b6ac522d8c832054def9617fd6a4da403daf1560c60254a7b4ac7a0"}