{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:NMISDL4WZONTESTNRUG6QVVYRE","short_pith_number":"pith:NMISDL4W","canonical_record":{"source":{"id":"2507.17039","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-22T21:53:29Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"f0d915ec3054ef25482fa78bb0f8f99a198e32f53d445f54f00888d4cebd33d1","abstract_canon_sha256":"120dfe6003a34f8cdcda53561863c8f0571e9afdbe3fd8f03d1a376b7f091f43"},"schema_version":"1.0"},"canonical_sha256":"6b1121af96cb9b324a6d8d0de856b8892ecd4a51ebd58e602d22b3c2d2e93c4e","source":{"kind":"arxiv","id":"2507.17039","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.17039","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"arxiv_version","alias_value":"2507.17039v1","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.17039","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_12","alias_value":"NMISDL4WZONT","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_16","alias_value":"NMISDL4WZONTESTN","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_8","alias_value":"NMISDL4W","created_at":"2026-07-05T11:42:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:NMISDL4WZONTESTNRUG6QVVYRE","target":"record","payload":{"canonical_record":{"source":{"id":"2507.17039","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-22T21:53:29Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"f0d915ec3054ef25482fa78bb0f8f99a198e32f53d445f54f00888d4cebd33d1","abstract_canon_sha256":"120dfe6003a34f8cdcda53561863c8f0571e9afdbe3fd8f03d1a376b7f091f43"},"schema_version":"1.0"},"canonical_sha256":"6b1121af96cb9b324a6d8d0de856b8892ecd4a51ebd58e602d22b3c2d2e93c4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:42:00.582216Z","signature_b64":"uNnMfZwuhcIh+mQFtF9C6+jrzaveL9xZ7VLVraTDDzXdy+goEAiCNE7+0YA0opm9gazWDdgrlCOEjJN11DPqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6b1121af96cb9b324a6d8d0de856b8892ecd4a51ebd58e602d22b3c2d2e93c4e","last_reissued_at":"2026-07-05T11:42:00.581655Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:42:00.581655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.17039","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":"2026-07-05T11:42:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nENGpgVobpnPvc4CSBWr+1OFQmU5iZx7iFy3sVSPoxFpVnuxNp7eeA/PmAW8j+7eqvC5rqmbKc69HA+o/xHuAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T23:13:11.726533Z"},"content_sha256":"33f70c4f1a2d7a1a4012f77d295d727684c44942a8dde8713eb47d7f83e0689b","schema_version":"1.0","event_id":"sha256:33f70c4f1a2d7a1a4012f77d295d727684c44942a8dde8713eb47d7f83e0689b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:NMISDL4WZONTESTNRUG6QVVYRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Josephson Traveling-Wave Parametric Amplifier with Inverse Kerr Phase Matching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"M. T. Bell","submitted_at":"2025-07-22T21:53:29Z","abstract_excerpt":"Superconducting traveling-wave parametric amplifiers (TWPA) have emerged as highly versatile devices, offering broadband amplification with quantum-limited noise performance. They hold significant potential for addressing the readout bottleneck in prototype quantum computers, enabling scalability. Key challenges with this technology include achieving sufficient gain with minimal gain ripple while maintaining low noise performance. Efficient phase matching between a weak signal and a strong pump over the entire length of the TWPA is critical to overcoming these challenges. We present an experim"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.17039","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/2507.17039/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":"2026-07-05T11:42:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4jwYtD4BebarHFPbTms5wM/i7+TXISugdwwahplF4dN5CL0IV+CwQaQn6nhArWdsfIgKPj7qnJEM7s/D8LNNDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T23:13:11.727021Z"},"content_sha256":"254058fe8ba49b3871634d03d1e428a5b60a69c01664732dcc54acdc3973e54f","schema_version":"1.0","event_id":"sha256:254058fe8ba49b3871634d03d1e428a5b60a69c01664732dcc54acdc3973e54f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NMISDL4WZONTESTNRUG6QVVYRE/bundle.json","state_url":"https://pith.science/pith/NMISDL4WZONTESTNRUG6QVVYRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NMISDL4WZONTESTNRUG6QVVYRE/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":"2026-08-08T23:13:11Z","links":{"resolver":"https://pith.science/pith/NMISDL4WZONTESTNRUG6QVVYRE","bundle":"https://pith.science/pith/NMISDL4WZONTESTNRUG6QVVYRE/bundle.json","state":"https://pith.science/pith/NMISDL4WZONTESTNRUG6QVVYRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NMISDL4WZONTESTNRUG6QVVYRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:NMISDL4WZONTESTNRUG6QVVYRE","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":"120dfe6003a34f8cdcda53561863c8f0571e9afdbe3fd8f03d1a376b7f091f43","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-22T21:53:29Z","title_canon_sha256":"f0d915ec3054ef25482fa78bb0f8f99a198e32f53d445f54f00888d4cebd33d1"},"schema_version":"1.0","source":{"id":"2507.17039","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.17039","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"arxiv_version","alias_value":"2507.17039v1","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.17039","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_12","alias_value":"NMISDL4WZONT","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_16","alias_value":"NMISDL4WZONTESTN","created_at":"2026-07-05T11:42:00Z"},{"alias_kind":"pith_short_8","alias_value":"NMISDL4W","created_at":"2026-07-05T11:42:00Z"}],"graph_snapshots":[{"event_id":"sha256:254058fe8ba49b3871634d03d1e428a5b60a69c01664732dcc54acdc3973e54f","target":"graph","created_at":"2026-07-05T11:42:00Z","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/2507.17039/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Superconducting traveling-wave parametric amplifiers (TWPA) have emerged as highly versatile devices, offering broadband amplification with quantum-limited noise performance. They hold significant potential for addressing the readout bottleneck in prototype quantum computers, enabling scalability. Key challenges with this technology include achieving sufficient gain with minimal gain ripple while maintaining low noise performance. Efficient phase matching between a weak signal and a strong pump over the entire length of the TWPA is critical to overcoming these challenges. We present an experim","authors_text":"M. T. Bell","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-22T21:53:29Z","title":"Josephson Traveling-Wave Parametric Amplifier with Inverse Kerr Phase Matching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.17039","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":"sha256:33f70c4f1a2d7a1a4012f77d295d727684c44942a8dde8713eb47d7f83e0689b","target":"record","created_at":"2026-07-05T11:42:00Z","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":"120dfe6003a34f8cdcda53561863c8f0571e9afdbe3fd8f03d1a376b7f091f43","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-07-22T21:53:29Z","title_canon_sha256":"f0d915ec3054ef25482fa78bb0f8f99a198e32f53d445f54f00888d4cebd33d1"},"schema_version":"1.0","source":{"id":"2507.17039","kind":"arxiv","version":1}},"canonical_sha256":"6b1121af96cb9b324a6d8d0de856b8892ecd4a51ebd58e602d22b3c2d2e93c4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6b1121af96cb9b324a6d8d0de856b8892ecd4a51ebd58e602d22b3c2d2e93c4e","first_computed_at":"2026-07-05T11:42:00.581655Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:42:00.581655Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uNnMfZwuhcIh+mQFtF9C6+jrzaveL9xZ7VLVraTDDzXdy+goEAiCNE7+0YA0opm9gazWDdgrlCOEjJN11DPqAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:42:00.582216Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.17039","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33f70c4f1a2d7a1a4012f77d295d727684c44942a8dde8713eb47d7f83e0689b","sha256:254058fe8ba49b3871634d03d1e428a5b60a69c01664732dcc54acdc3973e54f"],"state_sha256":"387f085d74f629d75e3c82cfdc06a25666cc926f9c08bea51e304cb814e4da3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UT/F3KmPm0a+ApK1aUS13k1GDKSn3hkjMQd1FM3gD82kpodEWf/srNl3PixpTspA0sMUukwnXA8H3tkz7rWQDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T23:13:11.732066Z","bundle_sha256":"3b1216ba5c617b174e07dc489e65035cd8947cfcc6d0f37b7d3e541a87ffbe7c"}}