{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:ADIE4VOUKEW2LGVXO66SAOQY4J","short_pith_number":"pith:ADIE4VOU","canonical_record":{"source":{"id":"2606.23434","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-22T14:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"3813eddf5d502760abbe8ec94899ed319c6780c752db7522004722fde78f92e7","abstract_canon_sha256":"985e0ca5d716b1f25a6a60226a865ffecc7464770f66ff1a130446571ac421bf"},"schema_version":"1.0"},"canonical_sha256":"00d04e55d4512da59ab777bd203a18e26cbd1f82fda3e8275fa56b1a86837196","source":{"kind":"arxiv","id":"2606.23434","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23434","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23434v1","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23434","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_12","alias_value":"ADIE4VOUKEW2","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_16","alias_value":"ADIE4VOUKEW2LGVX","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_8","alias_value":"ADIE4VOU","created_at":"2026-06-23T03:14:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:ADIE4VOUKEW2LGVXO66SAOQY4J","target":"record","payload":{"canonical_record":{"source":{"id":"2606.23434","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-22T14:52:19Z","cross_cats_sorted":[],"title_canon_sha256":"3813eddf5d502760abbe8ec94899ed319c6780c752db7522004722fde78f92e7","abstract_canon_sha256":"985e0ca5d716b1f25a6a60226a865ffecc7464770f66ff1a130446571ac421bf"},"schema_version":"1.0"},"canonical_sha256":"00d04e55d4512da59ab777bd203a18e26cbd1f82fda3e8275fa56b1a86837196","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-23T03:14:19.911854Z","signature_b64":"1lRPX2nDvtq8j7T5WRZNISybWdas/VlRoerP1sXSAFL1BjMjd2ID+dqFwuvFRUchgUpETiLb736CZZA2fVxUDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00d04e55d4512da59ab777bd203a18e26cbd1f82fda3e8275fa56b1a86837196","last_reissued_at":"2026-06-23T03:14:19.911504Z","signature_status":"signed_v1","first_computed_at":"2026-06-23T03:14:19.911504Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.23434","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":"2026-06-23T03:14:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hjkrY48IsjX8yJoEDlQiQu5pTYpn5bsr6I+YxpbikkTzOGS35UWQRTVVK1OQ/a7dqW1XzoFXzhBbCunfOPRQAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:38:19.758832Z"},"content_sha256":"a764b152653c9ce9364b0c8f68345c547d08f3f0014e4e5cf4245024efcb60be","schema_version":"1.0","event_id":"sha256:a764b152653c9ce9364b0c8f68345c547d08f3f0014e4e5cf4245024efcb60be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:ADIE4VOUKEW2LGVXO66SAOQY4J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Free-running single-cavity dual combs with Hz-level relative linewidth","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Heping Zeng, Jia Xu, Jieming Zhang, Ming Yan, Min Li, Xiangze Ma, Yuan Chen, Yueting Hu, Zhaoyang Wen, Zijian Wang","submitted_at":"2026-06-22T14:52:19Z","abstract_excerpt":"Single-cavity dual-comb lasers provide a compact and efficient source for dual-comb spectroscopy in gas sensing applications; however, achieving sufficient free-running mutual coherence for comb-line-resolved, high-resolution measurements remains challenging. Here, we present a symmetry-engineered bidirectional single-cavity dual-comb laser based on an all-polarization-maintaining fiber architecture. The system exhibits exceptional free-running mutual coherence, achieving Hz-level relative linewidths without active feedback or phase correction. The time-averaged absolute jitter of the dual-com"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23434","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/2606.23434/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":"2026-06-23T03:14:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"T40ZJTLVVgK7NUcd829tDAnRp/NSxIyVgjIZnHoF4nDoJ8v4KT86iI1OdrHSbcuEvETOpt38Umdns4aTbXQfAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T17:38:19.759188Z"},"content_sha256":"d719efe8d3c3240ff4d24ab9152c30f021c38540fec057128e1ead682632e795","schema_version":"1.0","event_id":"sha256:d719efe8d3c3240ff4d24ab9152c30f021c38540fec057128e1ead682632e795"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/bundle.json","state_url":"https://pith.science/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/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":"2026-06-27T17:38:19Z","links":{"resolver":"https://pith.science/pith/ADIE4VOUKEW2LGVXO66SAOQY4J","bundle":"https://pith.science/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/bundle.json","state":"https://pith.science/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ADIE4VOUKEW2LGVXO66SAOQY4J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:ADIE4VOUKEW2LGVXO66SAOQY4J","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":"985e0ca5d716b1f25a6a60226a865ffecc7464770f66ff1a130446571ac421bf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-22T14:52:19Z","title_canon_sha256":"3813eddf5d502760abbe8ec94899ed319c6780c752db7522004722fde78f92e7"},"schema_version":"1.0","source":{"id":"2606.23434","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.23434","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"arxiv_version","alias_value":"2606.23434v1","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.23434","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_12","alias_value":"ADIE4VOUKEW2","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_16","alias_value":"ADIE4VOUKEW2LGVX","created_at":"2026-06-23T03:14:19Z"},{"alias_kind":"pith_short_8","alias_value":"ADIE4VOU","created_at":"2026-06-23T03:14:19Z"}],"graph_snapshots":[{"event_id":"sha256:d719efe8d3c3240ff4d24ab9152c30f021c38540fec057128e1ead682632e795","target":"graph","created_at":"2026-06-23T03:14:19Z","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/2606.23434/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Single-cavity dual-comb lasers provide a compact and efficient source for dual-comb spectroscopy in gas sensing applications; however, achieving sufficient free-running mutual coherence for comb-line-resolved, high-resolution measurements remains challenging. Here, we present a symmetry-engineered bidirectional single-cavity dual-comb laser based on an all-polarization-maintaining fiber architecture. The system exhibits exceptional free-running mutual coherence, achieving Hz-level relative linewidths without active feedback or phase correction. The time-averaged absolute jitter of the dual-com","authors_text":"Heping Zeng, Jia Xu, Jieming Zhang, Ming Yan, Min Li, Xiangze Ma, Yuan Chen, Yueting Hu, Zhaoyang Wen, Zijian Wang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-22T14:52:19Z","title":"Free-running single-cavity dual combs with Hz-level relative linewidth"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.23434","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:a764b152653c9ce9364b0c8f68345c547d08f3f0014e4e5cf4245024efcb60be","target":"record","created_at":"2026-06-23T03:14:19Z","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":"985e0ca5d716b1f25a6a60226a865ffecc7464770f66ff1a130446571ac421bf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2026-06-22T14:52:19Z","title_canon_sha256":"3813eddf5d502760abbe8ec94899ed319c6780c752db7522004722fde78f92e7"},"schema_version":"1.0","source":{"id":"2606.23434","kind":"arxiv","version":1}},"canonical_sha256":"00d04e55d4512da59ab777bd203a18e26cbd1f82fda3e8275fa56b1a86837196","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00d04e55d4512da59ab777bd203a18e26cbd1f82fda3e8275fa56b1a86837196","first_computed_at":"2026-06-23T03:14:19.911504Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-23T03:14:19.911504Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1lRPX2nDvtq8j7T5WRZNISybWdas/VlRoerP1sXSAFL1BjMjd2ID+dqFwuvFRUchgUpETiLb736CZZA2fVxUDg==","signature_status":"signed_v1","signed_at":"2026-06-23T03:14:19.911854Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.23434","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a764b152653c9ce9364b0c8f68345c547d08f3f0014e4e5cf4245024efcb60be","sha256:d719efe8d3c3240ff4d24ab9152c30f021c38540fec057128e1ead682632e795"],"state_sha256":"cc46b71b0e077b778bb4c975782a86eab2247482d2061231af7c9956f4cea423"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"42MIOLWC3Sa6tfHvpY9lvf0m1QUBDc+Pvciwd+qa1MzyUO7Q7jURrdFtWSCsvpUkyf6LF4Pi0Z6tBWNBJdvEBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T17:38:19.761019Z","bundle_sha256":"dbfb62d7ffd9f16e073a5f5cfc970118a2200a1030d7170ded0ea3126c6e6774"}}