{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:4ZEXUUJS2N3EKETBCDOU7WDYWQ","short_pith_number":"pith:4ZEXUUJS","canonical_record":{"source":{"id":"2601.09764","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-01-14T08:59:01Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.optics"],"title_canon_sha256":"9f43871f3d06e9d4235957ba60cf7d28b7aaccc102bcd4d433d98affe96def16","abstract_canon_sha256":"7531a226f7519d7fda434bbae7e82667ed479674780ec43fb875f48e0297f08d"},"schema_version":"1.0"},"canonical_sha256":"e6497a5132d37645126110dd4fd878b43a891850d0054b8b5ca75770fb56cdc0","source":{"kind":"arxiv","id":"2601.09764","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.09764","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"arxiv_version","alias_value":"2601.09764v3","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.09764","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_12","alias_value":"4ZEXUUJS2N3E","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_16","alias_value":"4ZEXUUJS2N3EKETB","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_8","alias_value":"4ZEXUUJS","created_at":"2026-06-09T01:05:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:4ZEXUUJS2N3EKETBCDOU7WDYWQ","target":"record","payload":{"canonical_record":{"source":{"id":"2601.09764","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-01-14T08:59:01Z","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.optics"],"title_canon_sha256":"9f43871f3d06e9d4235957ba60cf7d28b7aaccc102bcd4d433d98affe96def16","abstract_canon_sha256":"7531a226f7519d7fda434bbae7e82667ed479674780ec43fb875f48e0297f08d"},"schema_version":"1.0"},"canonical_sha256":"e6497a5132d37645126110dd4fd878b43a891850d0054b8b5ca75770fb56cdc0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T01:05:12.746504Z","signature_b64":"SpmR7XOokiXfYgMuamKMX4Pisr2knQW8x+hedo5IT9n83GlYRxJviGWjHxRjNfxIaAxQYi+eV8PhwLHjaJnzCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6497a5132d37645126110dd4fd878b43a891850d0054b8b5ca75770fb56cdc0","last_reissued_at":"2026-06-09T01:05:12.746088Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T01:05:12.746088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2601.09764","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-09T01:05:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qHMi6L/N5R92sVnUByGPBSmLCddT+GPFKGCqqoGUmrrzWkU/ny+xnbfxDd6oHoWSvKxw7TasLdpte1e4Onu3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:49:40.725924Z"},"content_sha256":"a99b6ea07386398e01242effcd21c538c606f7c1e78a3a6ed20b87d9802ad18f","schema_version":"1.0","event_id":"sha256:a99b6ea07386398e01242effcd21c538c606f7c1e78a3a6ed20b87d9802ad18f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:4ZEXUUJS2N3EKETBCDOU7WDYWQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"DC response of an interferometer topology with an L-shaped cavity: a tabletop study","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","gr-qc","physics.optics"],"primary_cat":"physics.ins-det","authors_text":"Bram Slagmolen, Chenjie Zhou, Fan Zhang, Haixing Miao, Jameson Graef Rollins, Jiehong Huang, Junlang Li, Mengyao Wang, Raffaele Flaminio, Teng Zhang, Xiaoman Huang, Xinyao Guo, Yuan Pan, Yuchao Chen","submitted_at":"2026-01-14T08:59:01Z","abstract_excerpt":"A new interferometer topology for kilohertz gravitational-wave detection was recently proposed in [Zhang et al. Phys. Rev. X 13, 021019 (2023)]. The design is based on an L-shaped optical cavity pumped through a Sagnac-like vortex. We report a tabletop experiment that characterizes the interferometer's optical response near DC. When the laser frequency is locked to the resonance of the L-shaped cavity, we observe that the cavity input coupler becomes effectively transparent, yielding a simple Michelson-like response. Moreover, the Sagnac vortex separates into upper and lower paths, which behav"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.09764","kind":"arxiv","version":3},"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/2601.09764/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":"2026-06-09T01:05:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aoa87MYk1NYtNdloFgDufEdyPZ9SyQVNvdpBLS/whi3G5onTuOBCglnNwL/x6+7gTxztmkuncoLaXL+Ypl73Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T19:49:40.726727Z"},"content_sha256":"7a9a30d27e50afa57aec8ab1ed92a28e21fbfcc821e905a02752b141f97f3e36","schema_version":"1.0","event_id":"sha256:7a9a30d27e50afa57aec8ab1ed92a28e21fbfcc821e905a02752b141f97f3e36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/bundle.json","state_url":"https://pith.science/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/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":"2026-06-09T19:49:40Z","links":{"resolver":"https://pith.science/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ","bundle":"https://pith.science/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/bundle.json","state":"https://pith.science/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4ZEXUUJS2N3EKETBCDOU7WDYWQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:4ZEXUUJS2N3EKETBCDOU7WDYWQ","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":"7531a226f7519d7fda434bbae7e82667ed479674780ec43fb875f48e0297f08d","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-01-14T08:59:01Z","title_canon_sha256":"9f43871f3d06e9d4235957ba60cf7d28b7aaccc102bcd4d433d98affe96def16"},"schema_version":"1.0","source":{"id":"2601.09764","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.09764","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"arxiv_version","alias_value":"2601.09764v3","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.09764","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_12","alias_value":"4ZEXUUJS2N3E","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_16","alias_value":"4ZEXUUJS2N3EKETB","created_at":"2026-06-09T01:05:12Z"},{"alias_kind":"pith_short_8","alias_value":"4ZEXUUJS","created_at":"2026-06-09T01:05:12Z"}],"graph_snapshots":[{"event_id":"sha256:7a9a30d27e50afa57aec8ab1ed92a28e21fbfcc821e905a02752b141f97f3e36","target":"graph","created_at":"2026-06-09T01:05:12Z","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/2601.09764/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A new interferometer topology for kilohertz gravitational-wave detection was recently proposed in [Zhang et al. Phys. Rev. X 13, 021019 (2023)]. The design is based on an L-shaped optical cavity pumped through a Sagnac-like vortex. We report a tabletop experiment that characterizes the interferometer's optical response near DC. When the laser frequency is locked to the resonance of the L-shaped cavity, we observe that the cavity input coupler becomes effectively transparent, yielding a simple Michelson-like response. Moreover, the Sagnac vortex separates into upper and lower paths, which behav","authors_text":"Bram Slagmolen, Chenjie Zhou, Fan Zhang, Haixing Miao, Jameson Graef Rollins, Jiehong Huang, Junlang Li, Mengyao Wang, Raffaele Flaminio, Teng Zhang, Xiaoman Huang, Xinyao Guo, Yuan Pan, Yuchao Chen","cross_cats":["astro-ph.IM","gr-qc","physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-01-14T08:59:01Z","title":"DC response of an interferometer topology with an L-shaped cavity: a tabletop study"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.09764","kind":"arxiv","version":3},"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:a99b6ea07386398e01242effcd21c538c606f7c1e78a3a6ed20b87d9802ad18f","target":"record","created_at":"2026-06-09T01:05:12Z","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":"7531a226f7519d7fda434bbae7e82667ed479674780ec43fb875f48e0297f08d","cross_cats_sorted":["astro-ph.IM","gr-qc","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.ins-det","submitted_at":"2026-01-14T08:59:01Z","title_canon_sha256":"9f43871f3d06e9d4235957ba60cf7d28b7aaccc102bcd4d433d98affe96def16"},"schema_version":"1.0","source":{"id":"2601.09764","kind":"arxiv","version":3}},"canonical_sha256":"e6497a5132d37645126110dd4fd878b43a891850d0054b8b5ca75770fb56cdc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6497a5132d37645126110dd4fd878b43a891850d0054b8b5ca75770fb56cdc0","first_computed_at":"2026-06-09T01:05:12.746088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T01:05:12.746088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SpmR7XOokiXfYgMuamKMX4Pisr2knQW8x+hedo5IT9n83GlYRxJviGWjHxRjNfxIaAxQYi+eV8PhwLHjaJnzCQ==","signature_status":"signed_v1","signed_at":"2026-06-09T01:05:12.746504Z","signed_message":"canonical_sha256_bytes"},"source_id":"2601.09764","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a99b6ea07386398e01242effcd21c538c606f7c1e78a3a6ed20b87d9802ad18f","sha256:7a9a30d27e50afa57aec8ab1ed92a28e21fbfcc821e905a02752b141f97f3e36"],"state_sha256":"7de9714184bdd949f06e789854523dfbf29cc3855bbb85f0ed76a85f747f096d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"I8+2MCB88FPVL+c0+6EsPrNoCVtr6KuPyx22SQ7kUKx9wiLNhBVYcVVbY4gK3ZDiBQ98qx7/AJbzORK87uwDCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T19:49:40.731192Z","bundle_sha256":"c99e6db44f152bb484c0866f4de71885b53a76bb3d4cfebe2874906c069dc4c6"}}