{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:5V6Z7ZUV2B2QIHL6P6L5P7MBPT","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":"a94b6d158fa5edb9cfc6b0c044c35fbefd73fa6c0ae7056f7ab3ab0f2258d957","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T17:41:34Z","title_canon_sha256":"1c0ce6ddd72a79247a36d8236d6122205a6273de1a253ce6e36208c2fc5d8b4e"},"schema_version":"1.0","source":{"id":"2506.20645","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.20645","created_at":"2026-07-05T11:27:15Z"},{"alias_kind":"arxiv_version","alias_value":"2506.20645v1","created_at":"2026-07-05T11:27:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.20645","created_at":"2026-07-05T11:27:15Z"},{"alias_kind":"pith_short_12","alias_value":"5V6Z7ZUV2B2Q","created_at":"2026-07-05T11:27:15Z"},{"alias_kind":"pith_short_16","alias_value":"5V6Z7ZUV2B2QIHL6","created_at":"2026-07-05T11:27:15Z"},{"alias_kind":"pith_short_8","alias_value":"5V6Z7ZUV","created_at":"2026-07-05T11:27:15Z"}],"graph_snapshots":[{"event_id":"sha256:8d8f67e90c621191a696abe74c086a4966f9cb497408c3f9462562f826a4e688","target":"graph","created_at":"2026-07-05T11:27:15Z","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/2506.20645/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Protecting superconducting quantum circuits from non-ideal return loss, including out-of-band circulator behavior and enhancing the performance of broadband quantum-limited amplifiers can be accomplished using a superconducting version of a special class of microwave filters known as reflection-less filters. These filters can simultaneously permit low pass band loss to preserve quantum efficiency and broad band reflection-less characteristics in the stop and pass bands. The filter also suppresses thermal photons emitted in its pass band from the termination resistors by the nature of the dual ","authors_text":"Alec Yen, Andres E. Lombo, Eric Q. Bui, Jessica Kedziora, Kaidong Peng, Kevin P. O'Brien, Terence J. Weir","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T17:41:34Z","title":"Reflection-less filter for superconducting quantum circuits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.20645","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:d31fe8a5af20487d5193ee6917ff5bbb6d818dca3bb57120d447151de4307860","target":"record","created_at":"2026-07-05T11:27:15Z","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":"a94b6d158fa5edb9cfc6b0c044c35fbefd73fa6c0ae7056f7ab3ab0f2258d957","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T17:41:34Z","title_canon_sha256":"1c0ce6ddd72a79247a36d8236d6122205a6273de1a253ce6e36208c2fc5d8b4e"},"schema_version":"1.0","source":{"id":"2506.20645","kind":"arxiv","version":1}},"canonical_sha256":"ed7d9fe695d075041d7e7f97d7fd817cda2d12a5189e2368da9f38c6f3ebfa12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed7d9fe695d075041d7e7f97d7fd817cda2d12a5189e2368da9f38c6f3ebfa12","first_computed_at":"2026-07-05T11:27:15.630427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:27:15.630427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w7YHRAPgG7EmCUNy/qc3VtHkzIop4NcVQ6yRehKi4tNfGX9UFtqae2SvURXcbXMvLXVLjJSnXhyn14WD1ucmAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:27:15.630951Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.20645","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d31fe8a5af20487d5193ee6917ff5bbb6d818dca3bb57120d447151de4307860","sha256:8d8f67e90c621191a696abe74c086a4966f9cb497408c3f9462562f826a4e688"],"state_sha256":"dfc53fc45c03e9b7a8b18c30d8264da727ea8024d1684ac1db1c7ac602763e3d"}