{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:7HCZXQ6XOHJ7G4PJM4DHZV4JDV","short_pith_number":"pith:7HCZXQ6X","canonical_record":{"source":{"id":"2303.01026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-02T07:34:18Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"2ded6c1bcc32ac33bec1036c6ba135c9779fc9c6ea3815c7216ce7c8cbb74d98","abstract_canon_sha256":"4b8edf53a4aa145b5c7c1c115a62f93cd69965535c575ef93826da9353e3889c"},"schema_version":"1.0"},"canonical_sha256":"f9c59bc3d771d3f371e967067cd7891d524f1b21f4c7a64cb70b50eb75026e7c","source":{"kind":"arxiv","id":"2303.01026","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.01026","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"arxiv_version","alias_value":"2303.01026v1","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.01026","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_12","alias_value":"7HCZXQ6XOHJ7","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_16","alias_value":"7HCZXQ6XOHJ7G4PJ","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_8","alias_value":"7HCZXQ6X","created_at":"2026-07-05T06:44:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:7HCZXQ6XOHJ7G4PJM4DHZV4JDV","target":"record","payload":{"canonical_record":{"source":{"id":"2303.01026","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-02T07:34:18Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"2ded6c1bcc32ac33bec1036c6ba135c9779fc9c6ea3815c7216ce7c8cbb74d98","abstract_canon_sha256":"4b8edf53a4aa145b5c7c1c115a62f93cd69965535c575ef93826da9353e3889c"},"schema_version":"1.0"},"canonical_sha256":"f9c59bc3d771d3f371e967067cd7891d524f1b21f4c7a64cb70b50eb75026e7c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:44:30.010962Z","signature_b64":"etoag8sLdkls5SZzA7tWQUtLRnPRhaY0z7ci9wa/z9cDlqBeu2HtBfe4sd2lGdUmGCw/w2VUgmEYVk9qCbx5Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f9c59bc3d771d3f371e967067cd7891d524f1b21f4c7a64cb70b50eb75026e7c","last_reissued_at":"2026-07-05T06:44:30.010470Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:44:30.010470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2303.01026","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":"2026-07-05T06:44:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r9SzzjBVEOhlJy8zWsM5uknDqVJEIt4EL4aBf0orHczGegrlrdXZxFdhi8/Huako/sNarm4H9QgKmpLIThg4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:21:30.678543Z"},"content_sha256":"b3a5ef2a7b4c2d2736b0eb5ee96945b6065c6ed6377ec322481750c93e234e8a","schema_version":"1.0","event_id":"sha256:b3a5ef2a7b4c2d2736b0eb5ee96945b6065c6ed6377ec322481750c93e234e8a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:7HCZXQ6XOHJ7G4PJM4DHZV4JDV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum microwave parametric interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"A. Marx, F. Fesquet, F. Kronowetter, K. G. Fedorov, K. Honasoge, K. Inomata, M. Renger, R. Gross, Y. Nakamura, Y. Nojiri","submitted_at":"2023-03-02T07:34:18Z","abstract_excerpt":"Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit can be overcome by using quantum states or nonlinear quantum elements. Here, we present the experimental study of a nonlinear Josephson interferometer operating in the microwave regime. Our quantum microwave parametric interferometer (QUMPI) is based on superconducting flux-driven Josephson parametric amplifiers combined with linear microwave elements. We perform a systematic analysis of the implemented QUMPI. We find "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.01026","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/2303.01026/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":"2026-07-05T06:44:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2zJpNnT6zx2FZJdDnzFeolR2V7zGZuIj9lAggpBWIZhn8R3bZ113/JixqJDlrn6wA27MLKaRWQYLxBBaG7XxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T15:21:30.679476Z"},"content_sha256":"60e5a639b99178dc3b51c2316d27e55e3d03462d02e63b5d1807b2c95f1d136e","schema_version":"1.0","event_id":"sha256:60e5a639b99178dc3b51c2316d27e55e3d03462d02e63b5d1807b2c95f1d136e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/bundle.json","state_url":"https://pith.science/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/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":"2026-08-05T15:21:30Z","links":{"resolver":"https://pith.science/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV","bundle":"https://pith.science/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/bundle.json","state":"https://pith.science/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7HCZXQ6XOHJ7G4PJM4DHZV4JDV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7HCZXQ6XOHJ7G4PJM4DHZV4JDV","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":"4b8edf53a4aa145b5c7c1c115a62f93cd69965535c575ef93826da9353e3889c","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-02T07:34:18Z","title_canon_sha256":"2ded6c1bcc32ac33bec1036c6ba135c9779fc9c6ea3815c7216ce7c8cbb74d98"},"schema_version":"1.0","source":{"id":"2303.01026","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2303.01026","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"arxiv_version","alias_value":"2303.01026v1","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.01026","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_12","alias_value":"7HCZXQ6XOHJ7","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_16","alias_value":"7HCZXQ6XOHJ7G4PJ","created_at":"2026-07-05T06:44:30Z"},{"alias_kind":"pith_short_8","alias_value":"7HCZXQ6X","created_at":"2026-07-05T06:44:30Z"}],"graph_snapshots":[{"event_id":"sha256:60e5a639b99178dc3b51c2316d27e55e3d03462d02e63b5d1807b2c95f1d136e","target":"graph","created_at":"2026-07-05T06:44:30Z","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/2303.01026/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Classical interferometers are indispensable tools for the precise determination of various physical quantities. Their accuracy is bound by the standard quantum limit. This limit can be overcome by using quantum states or nonlinear quantum elements. Here, we present the experimental study of a nonlinear Josephson interferometer operating in the microwave regime. Our quantum microwave parametric interferometer (QUMPI) is based on superconducting flux-driven Josephson parametric amplifiers combined with linear microwave elements. We perform a systematic analysis of the implemented QUMPI. We find ","authors_text":"A. Marx, F. Fesquet, F. Kronowetter, K. G. Fedorov, K. Honasoge, K. Inomata, M. Renger, R. Gross, Y. Nakamura, Y. Nojiri","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-02T07:34:18Z","title":"Quantum microwave parametric interferometer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.01026","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:b3a5ef2a7b4c2d2736b0eb5ee96945b6065c6ed6377ec322481750c93e234e8a","target":"record","created_at":"2026-07-05T06:44:30Z","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":"4b8edf53a4aa145b5c7c1c115a62f93cd69965535c575ef93826da9353e3889c","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-03-02T07:34:18Z","title_canon_sha256":"2ded6c1bcc32ac33bec1036c6ba135c9779fc9c6ea3815c7216ce7c8cbb74d98"},"schema_version":"1.0","source":{"id":"2303.01026","kind":"arxiv","version":1}},"canonical_sha256":"f9c59bc3d771d3f371e967067cd7891d524f1b21f4c7a64cb70b50eb75026e7c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f9c59bc3d771d3f371e967067cd7891d524f1b21f4c7a64cb70b50eb75026e7c","first_computed_at":"2026-07-05T06:44:30.010470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:44:30.010470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"etoag8sLdkls5SZzA7tWQUtLRnPRhaY0z7ci9wa/z9cDlqBeu2HtBfe4sd2lGdUmGCw/w2VUgmEYVk9qCbx5Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:44:30.010962Z","signed_message":"canonical_sha256_bytes"},"source_id":"2303.01026","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3a5ef2a7b4c2d2736b0eb5ee96945b6065c6ed6377ec322481750c93e234e8a","sha256:60e5a639b99178dc3b51c2316d27e55e3d03462d02e63b5d1807b2c95f1d136e"],"state_sha256":"a26e520e5402781746e07473bdf5c73e9dc402cd06099a1e6a8add329558cbfa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LlA080vNO42GNDSnAJ11jbpbAeIeeVorlQ8+epRpr2DqOS6y+M3C5CEMCLk0i9xnh4PibAHB1INr6SIMid10DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T15:21:30.686836Z","bundle_sha256":"f3a83e3a8e6123655089ea49e2a5b0b5da230a9abae43ea4876d39be713f9b38"}}