{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:3EGO5V6T4AAGB5OF5KBSDMAX7G","short_pith_number":"pith:3EGO5V6T","canonical_record":{"source":{"id":"2502.16479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-23T07:27:17Z","cross_cats_sorted":["physics.atm-clus"],"title_canon_sha256":"8f89b85aeff3daaf05f9c8598c341f71fc9fa6506be57d1cf9e08af618997575","abstract_canon_sha256":"390b4318be1c0f38c571540a8305fb5daf3811d61e78a5e060fc9517899a49f3"},"schema_version":"1.0"},"canonical_sha256":"d90ceed7d3e00060f5c5ea8321b017f9b99a716945b0665c77d5110debf4bf78","source":{"kind":"arxiv","id":"2502.16479","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16479","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16479v1","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16479","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_12","alias_value":"3EGO5V6T4AAG","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_16","alias_value":"3EGO5V6T4AAGB5OF","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_8","alias_value":"3EGO5V6T","created_at":"2026-07-05T10:26:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:3EGO5V6T4AAGB5OF5KBSDMAX7G","target":"record","payload":{"canonical_record":{"source":{"id":"2502.16479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-23T07:27:17Z","cross_cats_sorted":["physics.atm-clus"],"title_canon_sha256":"8f89b85aeff3daaf05f9c8598c341f71fc9fa6506be57d1cf9e08af618997575","abstract_canon_sha256":"390b4318be1c0f38c571540a8305fb5daf3811d61e78a5e060fc9517899a49f3"},"schema_version":"1.0"},"canonical_sha256":"d90ceed7d3e00060f5c5ea8321b017f9b99a716945b0665c77d5110debf4bf78","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:26:14.475967Z","signature_b64":"/x0wuKNRJJqyLYh2AU5dhj8wZ2jVmtSZef6OPnqIup6UJKJO5D/a5Qjr+EM79sWWLTmfVLNnF0Rw957L34CeAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d90ceed7d3e00060f5c5ea8321b017f9b99a716945b0665c77d5110debf4bf78","last_reissued_at":"2026-07-05T10:26:14.475265Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:26:14.475265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.16479","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":"2026-07-05T10:26:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DWZB5MW58INOqKizxKDt7TTTrQjXlOmrSqLCo0pO3OHfF27CGoqI2+e5RvDvY3x6mk51XCT4phtrDLyjv5O3Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:25:40.859232Z"},"content_sha256":"d927d79a974cac2f63542f2defbcb855edbe3f67b4aa7027098454e73421bf93","schema_version":"1.0","event_id":"sha256:d927d79a974cac2f63542f2defbcb855edbe3f67b4aa7027098454e73421bf93"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:3EGO5V6T4AAGB5OF5KBSDMAX7G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced response at exceptional points in multi-qubit systems for sensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atm-clus"],"primary_cat":"quant-ph","authors_text":"Kaiye Shi, Tingting Shi, Vasilii Smirnov, Wei Zhang","submitted_at":"2025-02-23T07:27:17Z","abstract_excerpt":"Exceptional points featuring enhanced energy response to perturbation hold significant potential in detection and measurement of weak signals. Of particular interest is the existence and property of high-order exceptional points in quantum systems, owing to the capability to provide high-order response to perturbations. We investigate the exceptional points in a system of $n$ identical qubits possessing parity-time-reversal symmetry. We prove that owing to an incomplete coalescence of eigenstates, the highest possible order of exceptional point is $n+1$, which is also the upper bound of the or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16479","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/2502.16479/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":"2026-07-05T10:26:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X1tTrWW8+3mNN2sUg7Y569RFaTB/3gxPV/9i3ZpwbKv5qAhGuTkAEZiaDZlD/97qS/avyYMbA+ohGv1uwvU6Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:25:40.859732Z"},"content_sha256":"d0940325eadefa8a832ba90c262db5ec17dfaa641d03c7afc27a0abe5e37402c","schema_version":"1.0","event_id":"sha256:d0940325eadefa8a832ba90c262db5ec17dfaa641d03c7afc27a0abe5e37402c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/bundle.json","state_url":"https://pith.science/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/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":"2026-08-07T00:25:40Z","links":{"resolver":"https://pith.science/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G","bundle":"https://pith.science/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/bundle.json","state":"https://pith.science/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3EGO5V6T4AAGB5OF5KBSDMAX7G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:3EGO5V6T4AAGB5OF5KBSDMAX7G","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":"390b4318be1c0f38c571540a8305fb5daf3811d61e78a5e060fc9517899a49f3","cross_cats_sorted":["physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-23T07:27:17Z","title_canon_sha256":"8f89b85aeff3daaf05f9c8598c341f71fc9fa6506be57d1cf9e08af618997575"},"schema_version":"1.0","source":{"id":"2502.16479","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.16479","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"arxiv_version","alias_value":"2502.16479v1","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.16479","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_12","alias_value":"3EGO5V6T4AAG","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_16","alias_value":"3EGO5V6T4AAGB5OF","created_at":"2026-07-05T10:26:14Z"},{"alias_kind":"pith_short_8","alias_value":"3EGO5V6T","created_at":"2026-07-05T10:26:14Z"}],"graph_snapshots":[{"event_id":"sha256:d0940325eadefa8a832ba90c262db5ec17dfaa641d03c7afc27a0abe5e37402c","target":"graph","created_at":"2026-07-05T10:26:14Z","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/2502.16479/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Exceptional points featuring enhanced energy response to perturbation hold significant potential in detection and measurement of weak signals. Of particular interest is the existence and property of high-order exceptional points in quantum systems, owing to the capability to provide high-order response to perturbations. We investigate the exceptional points in a system of $n$ identical qubits possessing parity-time-reversal symmetry. We prove that owing to an incomplete coalescence of eigenstates, the highest possible order of exceptional point is $n+1$, which is also the upper bound of the or","authors_text":"Kaiye Shi, Tingting Shi, Vasilii Smirnov, Wei Zhang","cross_cats":["physics.atm-clus"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-23T07:27:17Z","title":"Enhanced response at exceptional points in multi-qubit systems for sensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.16479","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:d927d79a974cac2f63542f2defbcb855edbe3f67b4aa7027098454e73421bf93","target":"record","created_at":"2026-07-05T10:26:14Z","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":"390b4318be1c0f38c571540a8305fb5daf3811d61e78a5e060fc9517899a49f3","cross_cats_sorted":["physics.atm-clus"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-23T07:27:17Z","title_canon_sha256":"8f89b85aeff3daaf05f9c8598c341f71fc9fa6506be57d1cf9e08af618997575"},"schema_version":"1.0","source":{"id":"2502.16479","kind":"arxiv","version":1}},"canonical_sha256":"d90ceed7d3e00060f5c5ea8321b017f9b99a716945b0665c77d5110debf4bf78","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d90ceed7d3e00060f5c5ea8321b017f9b99a716945b0665c77d5110debf4bf78","first_computed_at":"2026-07-05T10:26:14.475265Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:26:14.475265Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/x0wuKNRJJqyLYh2AU5dhj8wZ2jVmtSZef6OPnqIup6UJKJO5D/a5Qjr+EM79sWWLTmfVLNnF0Rw957L34CeAg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:26:14.475967Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.16479","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d927d79a974cac2f63542f2defbcb855edbe3f67b4aa7027098454e73421bf93","sha256:d0940325eadefa8a832ba90c262db5ec17dfaa641d03c7afc27a0abe5e37402c"],"state_sha256":"c759a6073e8ebe751001293546eaa101be5fe12735ed684b54319e8665f63c96"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qZjEqIi80AMAEmtL8elOHOnx6j+ax5MOqLH6oro71SIq26x5vChQxPVst2SvYsc8AwFPaq7qqU4AQIgOELhYDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T00:25:40.864087Z","bundle_sha256":"b22d2e4595258665b1185d29a4ef4cfcd409c4c776ec9938a07ebc80bc7e28c3"}}