{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OIDXWVP6MTCIJ2533HKU2GAUTH","short_pith_number":"pith:OIDXWVP6","canonical_record":{"source":{"id":"2509.04839","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-09-05T06:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"c278e9b855ec4465dd61c9e28d633b19fac9d5f4969d7dd5673e2efc3ad9a538","abstract_canon_sha256":"485e4dd8c050bf6612b049ae3b8dd384a775ceceb1d95d4cdc0b1991d48757ec"},"schema_version":"1.0"},"canonical_sha256":"72077b55fe64c484ebbbd9d54d181499e583eb4323cb1e35c690abb6c8f8ed9b","source":{"kind":"arxiv","id":"2509.04839","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04839","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04839v2","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04839","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_12","alias_value":"OIDXWVP6MTCI","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_16","alias_value":"OIDXWVP6MTCIJ253","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_8","alias_value":"OIDXWVP6","created_at":"2026-06-09T01:04:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OIDXWVP6MTCIJ2533HKU2GAUTH","target":"record","payload":{"canonical_record":{"source":{"id":"2509.04839","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-09-05T06:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"c278e9b855ec4465dd61c9e28d633b19fac9d5f4969d7dd5673e2efc3ad9a538","abstract_canon_sha256":"485e4dd8c050bf6612b049ae3b8dd384a775ceceb1d95d4cdc0b1991d48757ec"},"schema_version":"1.0"},"canonical_sha256":"72077b55fe64c484ebbbd9d54d181499e583eb4323cb1e35c690abb6c8f8ed9b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T01:04:39.179712Z","signature_b64":"kU5R8ojYfjPUj3WZfAmcG1vmhOIKIDVWZtvA8Jyhmrp9FtRusQpcbvcFGmWkFZkmmsAzYqmcLN6B0SB4MD/kAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72077b55fe64c484ebbbd9d54d181499e583eb4323cb1e35c690abb6c8f8ed9b","last_reissued_at":"2026-06-09T01:04:39.179244Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T01:04:39.179244Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2509.04839","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-09T01:04:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FJClKViJdMRGsr3pxvLLSdwhJqmHTnJyW195KsiuS6nktqj9wY8T74UpiuSpeUb370jyarpCDiNPL/1wM9gOAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T13:26:25.840387Z"},"content_sha256":"8ab04bbae9a050369d31f961054ada90fd5d66c681311081cf64426d2d865a1f","schema_version":"1.0","event_id":"sha256:8ab04bbae9a050369d31f961054ada90fd5d66c681311081cf64426d2d865a1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OIDXWVP6MTCIJ2533HKU2GAUTH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impact of noise on nonlinear-exceptional-point-based sensors","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Chen Lin, Kai Bai, Meng Xiao","submitted_at":"2025-09-05T06:46:49Z","abstract_excerpt":"Nonlinear exceptional points (NEPs), a new type of spectral singularity in nonlinear non-Hermitian systems, are expected to address the noise divergence issue encountered at linear exceptional points and are therefore under the scrutiny of theoretical and experimental investigations. However, concerns have been raised that NEPs may hinder improvements in the signal-to-noise ratio (SNR) of sensors, and there is currently no rigorous theoretical framework to characterize noise effects in NEPs, particularly when accounting for the inherent nonlinear feedback. Here, we develop a new theoretical fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04839","kind":"arxiv","version":2},"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/2509.04839/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":"2026-06-09T01:04:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gqG4lUkvULiDZRTHsKowPDggQF/4+I9ggfjeaNEdGop58eLs+sip1sV/0Y/O9TpJ6bmN2Lk38ZvKGbIUIfJZDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T13:26:25.841206Z"},"content_sha256":"2f58ace31c8666b1ac5c4d64aae7676889a98ab8c53d2f9bbe2aa6d849c97927","schema_version":"1.0","event_id":"sha256:2f58ace31c8666b1ac5c4d64aae7676889a98ab8c53d2f9bbe2aa6d849c97927"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/bundle.json","state_url":"https://pith.science/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/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":"2026-06-10T13:26:25Z","links":{"resolver":"https://pith.science/pith/OIDXWVP6MTCIJ2533HKU2GAUTH","bundle":"https://pith.science/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/bundle.json","state":"https://pith.science/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OIDXWVP6MTCIJ2533HKU2GAUTH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OIDXWVP6MTCIJ2533HKU2GAUTH","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":"485e4dd8c050bf6612b049ae3b8dd384a775ceceb1d95d4cdc0b1991d48757ec","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-09-05T06:46:49Z","title_canon_sha256":"c278e9b855ec4465dd61c9e28d633b19fac9d5f4969d7dd5673e2efc3ad9a538"},"schema_version":"1.0","source":{"id":"2509.04839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2509.04839","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"arxiv_version","alias_value":"2509.04839v2","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2509.04839","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_12","alias_value":"OIDXWVP6MTCI","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_16","alias_value":"OIDXWVP6MTCIJ253","created_at":"2026-06-09T01:04:39Z"},{"alias_kind":"pith_short_8","alias_value":"OIDXWVP6","created_at":"2026-06-09T01:04:39Z"}],"graph_snapshots":[{"event_id":"sha256:2f58ace31c8666b1ac5c4d64aae7676889a98ab8c53d2f9bbe2aa6d849c97927","target":"graph","created_at":"2026-06-09T01:04:39Z","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/2509.04839/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nonlinear exceptional points (NEPs), a new type of spectral singularity in nonlinear non-Hermitian systems, are expected to address the noise divergence issue encountered at linear exceptional points and are therefore under the scrutiny of theoretical and experimental investigations. However, concerns have been raised that NEPs may hinder improvements in the signal-to-noise ratio (SNR) of sensors, and there is currently no rigorous theoretical framework to characterize noise effects in NEPs, particularly when accounting for the inherent nonlinear feedback. Here, we develop a new theoretical fr","authors_text":"Chen Lin, Kai Bai, Meng Xiao","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-09-05T06:46:49Z","title":"Impact of noise on nonlinear-exceptional-point-based sensors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2509.04839","kind":"arxiv","version":2},"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":"sha256:8ab04bbae9a050369d31f961054ada90fd5d66c681311081cf64426d2d865a1f","target":"record","created_at":"2026-06-09T01:04:39Z","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":"485e4dd8c050bf6612b049ae3b8dd384a775ceceb1d95d4cdc0b1991d48757ec","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-09-05T06:46:49Z","title_canon_sha256":"c278e9b855ec4465dd61c9e28d633b19fac9d5f4969d7dd5673e2efc3ad9a538"},"schema_version":"1.0","source":{"id":"2509.04839","kind":"arxiv","version":2}},"canonical_sha256":"72077b55fe64c484ebbbd9d54d181499e583eb4323cb1e35c690abb6c8f8ed9b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72077b55fe64c484ebbbd9d54d181499e583eb4323cb1e35c690abb6c8f8ed9b","first_computed_at":"2026-06-09T01:04:39.179244Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T01:04:39.179244Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kU5R8ojYfjPUj3WZfAmcG1vmhOIKIDVWZtvA8Jyhmrp9FtRusQpcbvcFGmWkFZkmmsAzYqmcLN6B0SB4MD/kAA==","signature_status":"signed_v1","signed_at":"2026-06-09T01:04:39.179712Z","signed_message":"canonical_sha256_bytes"},"source_id":"2509.04839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ab04bbae9a050369d31f961054ada90fd5d66c681311081cf64426d2d865a1f","sha256:2f58ace31c8666b1ac5c4d64aae7676889a98ab8c53d2f9bbe2aa6d849c97927"],"state_sha256":"f340b920937a8aeefe693435e490d4c4e84872382430bb9323684a04df615d5d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iE9kkSLm00Y4Z1gGeUvBqaFlHgmSwvRcpOA7k8z11rPMSHwWBRBwg8b1lE676xdj1z6E6pqP/RLkkw9RTZjSCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T13:26:25.845552Z","bundle_sha256":"fbb7680a981090d66126f899b29b6d34fdcc11ceb878c7d490ace10294e3736c"}}