{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:WARI4FPNGQ3ZDNEEWFJ2NDTZ6W","short_pith_number":"pith:WARI4FPN","canonical_record":{"source":{"id":"2503.00190","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-02-28T21:14:55Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"962223361e11273bb545bcc892ca7712e6e6844e13db59c412099181cf5085d1","abstract_canon_sha256":"0d0784699e209527dad6b63253b8e609f32d812518da9d0e030abb6a4c43624b"},"schema_version":"1.0"},"canonical_sha256":"b0228e15ed343791b484b153a68e79f5ad2b068beb1b1865514266fbb0523775","source":{"kind":"arxiv","id":"2503.00190","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.00190","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"arxiv_version","alias_value":"2503.00190v2","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.00190","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_12","alias_value":"WARI4FPNGQ3Z","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_16","alias_value":"WARI4FPNGQ3ZDNEE","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_8","alias_value":"WARI4FPN","created_at":"2026-07-05T11:56:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:WARI4FPNGQ3ZDNEEWFJ2NDTZ6W","target":"record","payload":{"canonical_record":{"source":{"id":"2503.00190","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-02-28T21:14:55Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"962223361e11273bb545bcc892ca7712e6e6844e13db59c412099181cf5085d1","abstract_canon_sha256":"0d0784699e209527dad6b63253b8e609f32d812518da9d0e030abb6a4c43624b"},"schema_version":"1.0"},"canonical_sha256":"b0228e15ed343791b484b153a68e79f5ad2b068beb1b1865514266fbb0523775","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:56:43.695891Z","signature_b64":"VE68SpBbRRIYVL4k2iuNNjSCPVC1zdUmYejHQaagB+cqSfPWT/mTTyFxyRu0Qih2MVhHw2MvBWa/Og6iFdfHAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b0228e15ed343791b484b153a68e79f5ad2b068beb1b1865514266fbb0523775","last_reissued_at":"2026-07-05T11:56:43.695334Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:56:43.695334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.00190","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:56:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JTCxoZ/Nz/GiPKDd4cYK4nawPdw8LBePPShUhTJBR4OdS0OX1Sl9BeEc6LkSRcUDaKjc2euyx+o3AKNekKFKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T22:53:53.664188Z"},"content_sha256":"6248bac82a085a18f4d10f77b3e22ad7108eef04623f7c5581496a2517a6461a","schema_version":"1.0","event_id":"sha256:6248bac82a085a18f4d10f77b3e22ad7108eef04623f7c5581496a2517a6461a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:WARI4FPNGQ3ZDNEEWFJ2NDTZ6W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation and mitigation of microwave echoes from dielectric defects in Josephson traveling wave amplifiers","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"primary_cat":"quant-ph","authors_text":"Ambroise Peugeot, Audrey Bienfait, Benjamin Huard, Joel Grebel, Matteo Boselli, R\\'emy Dassonneville","submitted_at":"2025-02-28T21:14:55Z","abstract_excerpt":"Amplifying microwave signals with a noise close to the minimum imposed by quantum mechanics is now routinely performed with superconducting quantum devices. In particular, Josephson-based Traveling Wave Parametric Amplifiers (JTWPA) have shown record bandwidth with added noise close to the quantum limit. In this work, we report the appearance of echo signals emitted by JTWPAs driven by trains of high-power pulses exceeding their dynamical range. we explore the case of weak signals generated through high power pulses. By sending a train of such high-power pulses, beyond the 1 dB compression poi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.00190","kind":"arxiv","version":2},"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/2503.00190/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":"2026-07-05T11:56:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m4r6rNnr6zKq7KT5wvtKrBIgzTebXoRbqC85Y5iE+RrjbLuSxG2+6eZaizFY+QWYil20kuMF2VsCyWEFr7CWDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T22:53:53.664695Z"},"content_sha256":"7832bc0310f1b31c659258f4e7cffc47164866a7e6bc71353477087ff4ba4c8a","schema_version":"1.0","event_id":"sha256:7832bc0310f1b31c659258f4e7cffc47164866a7e6bc71353477087ff4ba4c8a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/bundle.json","state_url":"https://pith.science/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/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":"2026-08-08T22:53:53Z","links":{"resolver":"https://pith.science/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W","bundle":"https://pith.science/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/bundle.json","state":"https://pith.science/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WARI4FPNGQ3ZDNEEWFJ2NDTZ6W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WARI4FPNGQ3ZDNEEWFJ2NDTZ6W","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":"0d0784699e209527dad6b63253b8e609f32d812518da9d0e030abb6a4c43624b","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-02-28T21:14:55Z","title_canon_sha256":"962223361e11273bb545bcc892ca7712e6e6844e13db59c412099181cf5085d1"},"schema_version":"1.0","source":{"id":"2503.00190","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.00190","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"arxiv_version","alias_value":"2503.00190v2","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.00190","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_12","alias_value":"WARI4FPNGQ3Z","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_16","alias_value":"WARI4FPNGQ3ZDNEE","created_at":"2026-07-05T11:56:43Z"},{"alias_kind":"pith_short_8","alias_value":"WARI4FPN","created_at":"2026-07-05T11:56:43Z"}],"graph_snapshots":[{"event_id":"sha256:7832bc0310f1b31c659258f4e7cffc47164866a7e6bc71353477087ff4ba4c8a","target":"graph","created_at":"2026-07-05T11:56:43Z","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/2503.00190/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Amplifying microwave signals with a noise close to the minimum imposed by quantum mechanics is now routinely performed with superconducting quantum devices. In particular, Josephson-based Traveling Wave Parametric Amplifiers (JTWPA) have shown record bandwidth with added noise close to the quantum limit. In this work, we report the appearance of echo signals emitted by JTWPAs driven by trains of high-power pulses exceeding their dynamical range. we explore the case of weak signals generated through high power pulses. By sending a train of such high-power pulses, beyond the 1 dB compression poi","authors_text":"Ambroise Peugeot, Audrey Bienfait, Benjamin Huard, Joel Grebel, Matteo Boselli, R\\'emy Dassonneville","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-02-28T21:14:55Z","title":"Observation and mitigation of microwave echoes from dielectric defects in Josephson traveling wave amplifiers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.00190","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":"sha256:6248bac82a085a18f4d10f77b3e22ad7108eef04623f7c5581496a2517a6461a","target":"record","created_at":"2026-07-05T11:56:43Z","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":"0d0784699e209527dad6b63253b8e609f32d812518da9d0e030abb6a4c43624b","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-02-28T21:14:55Z","title_canon_sha256":"962223361e11273bb545bcc892ca7712e6e6844e13db59c412099181cf5085d1"},"schema_version":"1.0","source":{"id":"2503.00190","kind":"arxiv","version":2}},"canonical_sha256":"b0228e15ed343791b484b153a68e79f5ad2b068beb1b1865514266fbb0523775","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b0228e15ed343791b484b153a68e79f5ad2b068beb1b1865514266fbb0523775","first_computed_at":"2026-07-05T11:56:43.695334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:56:43.695334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VE68SpBbRRIYVL4k2iuNNjSCPVC1zdUmYejHQaagB+cqSfPWT/mTTyFxyRu0Qih2MVhHw2MvBWa/Og6iFdfHAA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:56:43.695891Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.00190","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6248bac82a085a18f4d10f77b3e22ad7108eef04623f7c5581496a2517a6461a","sha256:7832bc0310f1b31c659258f4e7cffc47164866a7e6bc71353477087ff4ba4c8a"],"state_sha256":"34814fdb9adb032000452d39a7ffa83d67de76e30ecc50612474df8242588da9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7+5sbcWHRUD5UttcO3oF/nbc3T+5doWdL17ixx5ibkc4nMcMWLPvepo4YO5dh3ZvBEQ9g9KFjIVyj2MAV5SHAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T22:53:53.668622Z","bundle_sha256":"e3e4bf986f7af06c3ce5ddb426ce92e8918f360a5fe4f3244015013f5bceca8f"}}