{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:IFS2EXNBK2MXEFXSE2Z3PXWGRC","short_pith_number":"pith:IFS2EXNB","canonical_record":{"source":{"id":"1109.5562","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-26T13:40:11Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"91ba7a5b19885d29ed04552c3a92b12b4020e7ae54fe6e1e26a391714211d2d9","abstract_canon_sha256":"0c12c93d5d966586a3282dd51beb5c4ff00702c8b31cef619aea4b0d9f9ef466"},"schema_version":"1.0"},"canonical_sha256":"4165a25da156997216f226b3b7dec688bea57358225c68eeb3523bb8e11c04ac","source":{"kind":"arxiv","id":"1109.5562","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.5562","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"arxiv_version","alias_value":"1109.5562v1","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.5562","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"pith_short_12","alias_value":"IFS2EXNBK2MX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"IFS2EXNBK2MXEFXS","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"IFS2EXNB","created_at":"2026-05-18T12:26:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:IFS2EXNBK2MXEFXSE2Z3PXWGRC","target":"record","payload":{"canonical_record":{"source":{"id":"1109.5562","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-26T13:40:11Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"91ba7a5b19885d29ed04552c3a92b12b4020e7ae54fe6e1e26a391714211d2d9","abstract_canon_sha256":"0c12c93d5d966586a3282dd51beb5c4ff00702c8b31cef619aea4b0d9f9ef466"},"schema_version":"1.0"},"canonical_sha256":"4165a25da156997216f226b3b7dec688bea57358225c68eeb3523bb8e11c04ac","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:35:14.299585Z","signature_b64":"lYz6UfOtfKPtOGvFENQvUUmA5CIs1gazBX6L7yUHnHoi7dZ2A3+gNKA9dXjyJvkwnW2j6b/9MUPH+fNixSsABQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4165a25da156997216f226b3b7dec688bea57358225c68eeb3523bb8e11c04ac","last_reissued_at":"2026-05-18T00:35:14.299117Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:35:14.299117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.5562","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":"2026-05-18T00:35:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G9hlJ38owkHrtlVD2sQ++kGCRxzG/bI18ZB+6dqFFIEPNUmZkPWLjDr+gle3GAhJ1loxMiN2d05O9Koe40glBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:45.989874Z"},"content_sha256":"0172a3fea75560821565fc3f77760c194b0c02923826f5fc1a61b6af51d90c3b","schema_version":"1.0","event_id":"sha256:0172a3fea75560821565fc3f77760c194b0c02923826f5fc1a61b6af51d90c3b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:IFS2EXNBK2MXEFXSE2Z3PXWGRC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Qubit state detection using the quantum Duffing oscillator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"M. Thorwart, V. Leyton, V. Peano","submitted_at":"2011-09-26T13:40:11Z","abstract_excerpt":"We introduce a detection scheme for the state of a qubit, which is based on resonant few-photon transitions in a driven nonlinear resonator. The latter is parametrically coupled to the qubit and is used as its detector. Close to the fundamental resonator frequency, the nonlinear resonator shows sharp resonant few-photon transitions. Depending on the qubit state, these few-photon resonances are shifted to different driving frequencies. We show that this detection scheme offers the advantage of small back action, a large discrimination power with an enhanced read-out fidelity, and a sufficiently"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.5562","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":""},"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":"2026-05-18T00:35:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ot4kkOd7bcyboL022mkAF8/bQdekNYN9+uZ87tAFATfJBijdrdXX1Hnogwa2MqRdhdWUDC/GMNlSRrSsMEbFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T05:03:45.990255Z"},"content_sha256":"4a1b64887ec6a90d2e25a2d72b55e9b8a11eb39125cc2252033c5f4542cafc60","schema_version":"1.0","event_id":"sha256:4a1b64887ec6a90d2e25a2d72b55e9b8a11eb39125cc2252033c5f4542cafc60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/bundle.json","state_url":"https://pith.science/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/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":"2026-05-30T05:03:45Z","links":{"resolver":"https://pith.science/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC","bundle":"https://pith.science/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/bundle.json","state":"https://pith.science/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IFS2EXNBK2MXEFXSE2Z3PXWGRC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:IFS2EXNBK2MXEFXSE2Z3PXWGRC","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":"0c12c93d5d966586a3282dd51beb5c4ff00702c8b31cef619aea4b0d9f9ef466","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-26T13:40:11Z","title_canon_sha256":"91ba7a5b19885d29ed04552c3a92b12b4020e7ae54fe6e1e26a391714211d2d9"},"schema_version":"1.0","source":{"id":"1109.5562","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.5562","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"arxiv_version","alias_value":"1109.5562v1","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.5562","created_at":"2026-05-18T00:35:14Z"},{"alias_kind":"pith_short_12","alias_value":"IFS2EXNBK2MX","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"IFS2EXNBK2MXEFXS","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"IFS2EXNB","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:4a1b64887ec6a90d2e25a2d72b55e9b8a11eb39125cc2252033c5f4542cafc60","target":"graph","created_at":"2026-05-18T00:35:14Z","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"},"paper":{"abstract_excerpt":"We introduce a detection scheme for the state of a qubit, which is based on resonant few-photon transitions in a driven nonlinear resonator. The latter is parametrically coupled to the qubit and is used as its detector. Close to the fundamental resonator frequency, the nonlinear resonator shows sharp resonant few-photon transitions. Depending on the qubit state, these few-photon resonances are shifted to different driving frequencies. We show that this detection scheme offers the advantage of small back action, a large discrimination power with an enhanced read-out fidelity, and a sufficiently","authors_text":"M. Thorwart, V. Leyton, V. Peano","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-26T13:40:11Z","title":"Qubit state detection using the quantum Duffing oscillator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.5562","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":"sha256:0172a3fea75560821565fc3f77760c194b0c02923826f5fc1a61b6af51d90c3b","target":"record","created_at":"2026-05-18T00:35:14Z","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":"0c12c93d5d966586a3282dd51beb5c4ff00702c8b31cef619aea4b0d9f9ef466","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-26T13:40:11Z","title_canon_sha256":"91ba7a5b19885d29ed04552c3a92b12b4020e7ae54fe6e1e26a391714211d2d9"},"schema_version":"1.0","source":{"id":"1109.5562","kind":"arxiv","version":1}},"canonical_sha256":"4165a25da156997216f226b3b7dec688bea57358225c68eeb3523bb8e11c04ac","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4165a25da156997216f226b3b7dec688bea57358225c68eeb3523bb8e11c04ac","first_computed_at":"2026-05-18T00:35:14.299117Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:14.299117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lYz6UfOtfKPtOGvFENQvUUmA5CIs1gazBX6L7yUHnHoi7dZ2A3+gNKA9dXjyJvkwnW2j6b/9MUPH+fNixSsABQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:14.299585Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.5562","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0172a3fea75560821565fc3f77760c194b0c02923826f5fc1a61b6af51d90c3b","sha256:4a1b64887ec6a90d2e25a2d72b55e9b8a11eb39125cc2252033c5f4542cafc60"],"state_sha256":"fab261bf1ff1dd0e9ac1bb76b957aa34ae7e663e35d823768e85d1099320897b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/UAm/z8dlfOhdN4p6794i9pFsVOGCD7CGi1NE4xkPvYdm+RmP+i3hmkxEYnV8kGTMyIpFFhPTs5z9cIDP3GVCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T05:03:45.993728Z","bundle_sha256":"c8d282799a318e2c8905c968f393f2ea46d62540c73673b25907bbab43267f17"}}