{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:E2CM4W3JFUQZKHX4VUMNXYF5BF","short_pith_number":"pith:E2CM4W3J","canonical_record":{"source":{"id":"2506.07384","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T03:07:02Z","cross_cats_sorted":[],"title_canon_sha256":"12a9d52ae3825abf9f52db01f287d41a2ba092d777d799c2c124580e34fd1541","abstract_canon_sha256":"732b15a84370079914415eed0a3b85f9429cdb0101f2906280e5762ca0245ab3"},"schema_version":"1.0"},"canonical_sha256":"2684ce5b692d21951efcad18dbe0bd094502b0ae1bd4e49ee1655c18befa50d6","source":{"kind":"arxiv","id":"2506.07384","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.07384","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"arxiv_version","alias_value":"2506.07384v1","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.07384","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_12","alias_value":"E2CM4W3JFUQZ","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_16","alias_value":"E2CM4W3JFUQZKHX4","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_8","alias_value":"E2CM4W3J","created_at":"2026-07-05T11:18:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:E2CM4W3JFUQZKHX4VUMNXYF5BF","target":"record","payload":{"canonical_record":{"source":{"id":"2506.07384","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T03:07:02Z","cross_cats_sorted":[],"title_canon_sha256":"12a9d52ae3825abf9f52db01f287d41a2ba092d777d799c2c124580e34fd1541","abstract_canon_sha256":"732b15a84370079914415eed0a3b85f9429cdb0101f2906280e5762ca0245ab3"},"schema_version":"1.0"},"canonical_sha256":"2684ce5b692d21951efcad18dbe0bd094502b0ae1bd4e49ee1655c18befa50d6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:18:26.254955Z","signature_b64":"gLz4DPWMdCr2pmUcl6KMBV7MqTL6soFM4Ygf1sFyJ46abRjH6R6nShUWxUtv4+ZgcAAAtBZHWzMjI+quC9JcBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2684ce5b692d21951efcad18dbe0bd094502b0ae1bd4e49ee1655c18befa50d6","last_reissued_at":"2026-07-05T11:18:26.254449Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:18:26.254449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.07384","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":"2026-07-05T11:18:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WYGxsmHFBy1wgqRsov4kDsdCSppX2jvClkJmGICm40ll5Be2PDvCURuwptU9KYsVoH/nfxRsf+WjMWdmsu/hDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T00:47:34.320814Z"},"content_sha256":"37c867bb640c168cd3a02664b3c76ee6d8e9c1a3e99b60df3ca7d87d6351ade9","schema_version":"1.0","event_id":"sha256:37c867bb640c168cd3a02664b3c76ee6d8e9c1a3e99b60df3ca7d87d6351ade9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:E2CM4W3JFUQZKHX4VUMNXYF5BF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhancing Measurement Precision of Non-Degenerate Two-Photon Absorption","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Devendra Kumar Mishra, Frank Schlawin, Gaurav Shukla, Shahram Panahiyan","submitted_at":"2025-06-09T03:07:02Z","abstract_excerpt":"Recent theoretical and experimental studies have shown that squeezed states of light can be engineered to enhance the resolution of nonlinear optical measurements. Here, we analyze non-degenerate two-photon absorption signals obtained from transmission measurements using two-mode squeezed light and compare different measurement strategies. In particular, we investigate how correlations between the light modes may be used to improve the achievable precision. We find that intensity correlation measurements offer the best performance compared to normalized intensity correlation and noise reductio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.07384","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/2506.07384/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":"2026-07-05T11:18:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1zJRw4og37B77qGwBrekwAgxZHKFEhf71UvPJF//IrzV5E+y48rCRJic3MfmOlRCL7T0bxRASko/ui9qTfGYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T00:47:34.321734Z"},"content_sha256":"19b7c7eb3998ae0af4c2a590fc289b8481eb84933ab8d0bcd82b661bbc7dae09","schema_version":"1.0","event_id":"sha256:19b7c7eb3998ae0af4c2a590fc289b8481eb84933ab8d0bcd82b661bbc7dae09"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/bundle.json","state_url":"https://pith.science/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/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":"2026-08-19T00:47:34Z","links":{"resolver":"https://pith.science/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF","bundle":"https://pith.science/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/bundle.json","state":"https://pith.science/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E2CM4W3JFUQZKHX4VUMNXYF5BF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:E2CM4W3JFUQZKHX4VUMNXYF5BF","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":"732b15a84370079914415eed0a3b85f9429cdb0101f2906280e5762ca0245ab3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T03:07:02Z","title_canon_sha256":"12a9d52ae3825abf9f52db01f287d41a2ba092d777d799c2c124580e34fd1541"},"schema_version":"1.0","source":{"id":"2506.07384","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.07384","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"arxiv_version","alias_value":"2506.07384v1","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.07384","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_12","alias_value":"E2CM4W3JFUQZ","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_16","alias_value":"E2CM4W3JFUQZKHX4","created_at":"2026-07-05T11:18:26Z"},{"alias_kind":"pith_short_8","alias_value":"E2CM4W3J","created_at":"2026-07-05T11:18:26Z"}],"graph_snapshots":[{"event_id":"sha256:19b7c7eb3998ae0af4c2a590fc289b8481eb84933ab8d0bcd82b661bbc7dae09","target":"graph","created_at":"2026-07-05T11:18:26Z","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/2506.07384/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent theoretical and experimental studies have shown that squeezed states of light can be engineered to enhance the resolution of nonlinear optical measurements. Here, we analyze non-degenerate two-photon absorption signals obtained from transmission measurements using two-mode squeezed light and compare different measurement strategies. In particular, we investigate how correlations between the light modes may be used to improve the achievable precision. We find that intensity correlation measurements offer the best performance compared to normalized intensity correlation and noise reductio","authors_text":"Devendra Kumar Mishra, Frank Schlawin, Gaurav Shukla, Shahram Panahiyan","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T03:07:02Z","title":"Enhancing Measurement Precision of Non-Degenerate Two-Photon Absorption"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.07384","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":"sha256:37c867bb640c168cd3a02664b3c76ee6d8e9c1a3e99b60df3ca7d87d6351ade9","target":"record","created_at":"2026-07-05T11:18:26Z","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":"732b15a84370079914415eed0a3b85f9429cdb0101f2906280e5762ca0245ab3","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-09T03:07:02Z","title_canon_sha256":"12a9d52ae3825abf9f52db01f287d41a2ba092d777d799c2c124580e34fd1541"},"schema_version":"1.0","source":{"id":"2506.07384","kind":"arxiv","version":1}},"canonical_sha256":"2684ce5b692d21951efcad18dbe0bd094502b0ae1bd4e49ee1655c18befa50d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2684ce5b692d21951efcad18dbe0bd094502b0ae1bd4e49ee1655c18befa50d6","first_computed_at":"2026-07-05T11:18:26.254449Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:18:26.254449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gLz4DPWMdCr2pmUcl6KMBV7MqTL6soFM4Ygf1sFyJ46abRjH6R6nShUWxUtv4+ZgcAAAtBZHWzMjI+quC9JcBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:18:26.254955Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.07384","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:37c867bb640c168cd3a02664b3c76ee6d8e9c1a3e99b60df3ca7d87d6351ade9","sha256:19b7c7eb3998ae0af4c2a590fc289b8481eb84933ab8d0bcd82b661bbc7dae09"],"state_sha256":"7157b12d4c8cc9f2ab179058822ae34456d0c23a7c8c8149fc075b35f398b0b5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qtiBx6lCAqv4Y0bbgBb7gZ0N8F5S3I0a7XMqOKGhPdc7BhZMMsTdaA0eyj/VJ3I/eNbblG3q+zpsfLpmb7pCBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T00:47:34.349240Z","bundle_sha256":"ef0e9b97077dde44281d026b8ad7827eae1d42db33b26e024327171411462a2e"}}