{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LHVQBNTSYTTFDFJL6S7WADFLZN","short_pith_number":"pith:LHVQBNTS","canonical_record":{"source":{"id":"2412.05972","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-12-08T15:42:04Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"fde36ce9a3303db1ded68df6a131ca831c4db5f10ec6ea458812f481363d2cb9","abstract_canon_sha256":"5cd06df3ab5cad86639c8ef16ec36abbb734b7a6f93a07d350a8500f6b5bdaa7"},"schema_version":"1.0"},"canonical_sha256":"59eb00b672c4e651952bf4bf600cabcb701e066f5688bc0c4666e2debc975676","source":{"kind":"arxiv","id":"2412.05972","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.05972","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"arxiv_version","alias_value":"2412.05972v1","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.05972","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_12","alias_value":"LHVQBNTSYTTF","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_16","alias_value":"LHVQBNTSYTTFDFJL","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_8","alias_value":"LHVQBNTS","created_at":"2026-07-05T09:46:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LHVQBNTSYTTFDFJL6S7WADFLZN","target":"record","payload":{"canonical_record":{"source":{"id":"2412.05972","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-12-08T15:42:04Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"fde36ce9a3303db1ded68df6a131ca831c4db5f10ec6ea458812f481363d2cb9","abstract_canon_sha256":"5cd06df3ab5cad86639c8ef16ec36abbb734b7a6f93a07d350a8500f6b5bdaa7"},"schema_version":"1.0"},"canonical_sha256":"59eb00b672c4e651952bf4bf600cabcb701e066f5688bc0c4666e2debc975676","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:46:12.375897Z","signature_b64":"SZmbYrkr7fxV6Fe99QtP/Eplh5fbxBTFCtdfBJLJRgpuKzKz4hNI4F0wxMOC8yLHrCgpYRIxO7rfNWoKbHe7Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"59eb00b672c4e651952bf4bf600cabcb701e066f5688bc0c4666e2debc975676","last_reissued_at":"2026-07-05T09:46:12.375540Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:46:12.375540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2412.05972","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":"2026-07-05T09:46:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B+l8i1mJ8TPhEOdmXGDiWyDow4rtuaOVCFKULJLz+h4fwwk9IRVqM/ah8JBRXkHNBK/T8eKi7gEBJHzX6hGaAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:00:56.391075Z"},"content_sha256":"a5f5b0f0933c2b90752c23fe39b140d4cecb6e4517eaef0555ae266238a077f4","schema_version":"1.0","event_id":"sha256:a5f5b0f0933c2b90752c23fe39b140d4cecb6e4517eaef0555ae266238a077f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LHVQBNTSYTTFDFJL6S7WADFLZN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase-locked feed forward stabilization for dual comb spectroscopy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Alexander Eber, Birgitta Bernhardt, Emily Hruska, Lukas F\\\"urst, Marcus Ossiander, Mithun Pal","submitted_at":"2024-12-08T15:42:04Z","abstract_excerpt":"Sustained mutual coherence between two combs over extended periods is a prerequisite for dual-comb spectroscopy (DCS), particularly in achieving high-resolution molecular spectroscopy and precise spectral measurements. However, achieving long coherence times remains a challenge for Yb-doped frequency combs. This work introduces an experimental approach for phase-stable DCS using Yb-doped frequency combs at 1.03 ${\\mu}$m with a novel feed-forward method, combatting the limitations of mutual coherence. Without relying on computer-based phase correction, we achieve a coherence time of 1000 second"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.05972","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/2412.05972/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":"2026-07-05T09:46:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TeeYwCuIpjRKL2brr8X8G3tAo5wH6GydwjX5yMSiouNTG9KdPxyKeZ1++qxm80808uOkYoqUIgQ+GtpOrfiMAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:00:56.392124Z"},"content_sha256":"ada978b2cf3f2c97c3f16363d3e1308ad946fcfffbbfc800803415de1ebccae0","schema_version":"1.0","event_id":"sha256:ada978b2cf3f2c97c3f16363d3e1308ad946fcfffbbfc800803415de1ebccae0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/bundle.json","state_url":"https://pith.science/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/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":"2026-08-13T19:00:56Z","links":{"resolver":"https://pith.science/pith/LHVQBNTSYTTFDFJL6S7WADFLZN","bundle":"https://pith.science/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/bundle.json","state":"https://pith.science/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LHVQBNTSYTTFDFJL6S7WADFLZN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LHVQBNTSYTTFDFJL6S7WADFLZN","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":"5cd06df3ab5cad86639c8ef16ec36abbb734b7a6f93a07d350a8500f6b5bdaa7","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-12-08T15:42:04Z","title_canon_sha256":"fde36ce9a3303db1ded68df6a131ca831c4db5f10ec6ea458812f481363d2cb9"},"schema_version":"1.0","source":{"id":"2412.05972","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.05972","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"arxiv_version","alias_value":"2412.05972v1","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.05972","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_12","alias_value":"LHVQBNTSYTTF","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_16","alias_value":"LHVQBNTSYTTFDFJL","created_at":"2026-07-05T09:46:12Z"},{"alias_kind":"pith_short_8","alias_value":"LHVQBNTS","created_at":"2026-07-05T09:46:12Z"}],"graph_snapshots":[{"event_id":"sha256:ada978b2cf3f2c97c3f16363d3e1308ad946fcfffbbfc800803415de1ebccae0","target":"graph","created_at":"2026-07-05T09:46:12Z","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/2412.05972/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sustained mutual coherence between two combs over extended periods is a prerequisite for dual-comb spectroscopy (DCS), particularly in achieving high-resolution molecular spectroscopy and precise spectral measurements. However, achieving long coherence times remains a challenge for Yb-doped frequency combs. This work introduces an experimental approach for phase-stable DCS using Yb-doped frequency combs at 1.03 ${\\mu}$m with a novel feed-forward method, combatting the limitations of mutual coherence. Without relying on computer-based phase correction, we achieve a coherence time of 1000 second","authors_text":"Alexander Eber, Birgitta Bernhardt, Emily Hruska, Lukas F\\\"urst, Marcus Ossiander, Mithun Pal","cross_cats":["physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-12-08T15:42:04Z","title":"Phase-locked feed forward stabilization for dual comb spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.05972","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:a5f5b0f0933c2b90752c23fe39b140d4cecb6e4517eaef0555ae266238a077f4","target":"record","created_at":"2026-07-05T09:46:12Z","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":"5cd06df3ab5cad86639c8ef16ec36abbb734b7a6f93a07d350a8500f6b5bdaa7","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-12-08T15:42:04Z","title_canon_sha256":"fde36ce9a3303db1ded68df6a131ca831c4db5f10ec6ea458812f481363d2cb9"},"schema_version":"1.0","source":{"id":"2412.05972","kind":"arxiv","version":1}},"canonical_sha256":"59eb00b672c4e651952bf4bf600cabcb701e066f5688bc0c4666e2debc975676","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59eb00b672c4e651952bf4bf600cabcb701e066f5688bc0c4666e2debc975676","first_computed_at":"2026-07-05T09:46:12.375540Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:46:12.375540Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SZmbYrkr7fxV6Fe99QtP/Eplh5fbxBTFCtdfBJLJRgpuKzKz4hNI4F0wxMOC8yLHrCgpYRIxO7rfNWoKbHe7Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:46:12.375897Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.05972","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5f5b0f0933c2b90752c23fe39b140d4cecb6e4517eaef0555ae266238a077f4","sha256:ada978b2cf3f2c97c3f16363d3e1308ad946fcfffbbfc800803415de1ebccae0"],"state_sha256":"edee614ec70206b59da747048cf238100091c177d9c82f1da03855e90c31d8a0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k/vyzvvSQumUfwBQ+AE5rRiQsDSRAnUGgF9ZNv0jduK0pqvRcejLXiUBWcf8eIp5YU6jhoKO4TlcYkByKG/hAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T19:00:56.399245Z","bundle_sha256":"16b0ed26478df3ba742838858a27cb2ba5ef6df42cdd2176527ab93c0127cb25"}}