{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:37KEBSWBJWNS5BYH3G6EZC4HDU","short_pith_number":"pith:37KEBSWB","canonical_record":{"source":{"id":"2402.02839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-02-05T09:51:01Z","cross_cats_sorted":[],"title_canon_sha256":"57f935d508575b47e2264507c3e9b0d2d455efe130d120a368f4bd6b7b2394f1","abstract_canon_sha256":"4fb4c5b8eb3c5b4a23bdfcbd144d52c2f11cedaf6670912461454a0ee0849539"},"schema_version":"1.0"},"canonical_sha256":"dfd440cac14d9b2e8707d9bc4c8b871d1c603b8b1f1bbb09559ac9712b0b7137","source":{"kind":"arxiv","id":"2402.02839","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.02839","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"arxiv_version","alias_value":"2402.02839v2","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.02839","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_12","alias_value":"37KEBSWBJWNS","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_16","alias_value":"37KEBSWBJWNS5BYH","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_8","alias_value":"37KEBSWB","created_at":"2026-07-05T09:42:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:37KEBSWBJWNS5BYH3G6EZC4HDU","target":"record","payload":{"canonical_record":{"source":{"id":"2402.02839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-02-05T09:51:01Z","cross_cats_sorted":[],"title_canon_sha256":"57f935d508575b47e2264507c3e9b0d2d455efe130d120a368f4bd6b7b2394f1","abstract_canon_sha256":"4fb4c5b8eb3c5b4a23bdfcbd144d52c2f11cedaf6670912461454a0ee0849539"},"schema_version":"1.0"},"canonical_sha256":"dfd440cac14d9b2e8707d9bc4c8b871d1c603b8b1f1bbb09559ac9712b0b7137","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:42:22.764904Z","signature_b64":"JmU6RHUK6h5b+wCRdWLrQZCJc+Oe1NCrTLNC4TAU4FdiWf/AS/p5VAWpF/nGfgn8KSU+vEff/fRHWRpk9t/hCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfd440cac14d9b2e8707d9bc4c8b871d1c603b8b1f1bbb09559ac9712b0b7137","last_reissued_at":"2026-07-05T09:42:22.764232Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:42:22.764232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.02839","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":"2026-07-05T09:42:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d1yu81UZpzv7oO+l2fKu/dBs9YQunGDRmn3gcXJhUnGr0Omrcb9GYR9SdjoqoTwzhuXjpWKPLl7y1HvfPbBKCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T05:07:32.661779Z"},"content_sha256":"d207e00f10be4cfcbd3c433839487702d1baf6025a2f6a4d7a04aa13d466dc26","schema_version":"1.0","event_id":"sha256:d207e00f10be4cfcbd3c433839487702d1baf6025a2f6a4d7a04aa13d466dc26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:37KEBSWBJWNS5BYH3G6EZC4HDU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measuring topological invariants for higher-order exceptional points in quantum three-mode systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chui-ping Yang, Fan Wu, Pei-Rong Han, Qi-ping Su, Ri-Hua Zheng, Shi-Biao Zheng, Shou-Bang Yang, Wen Ning, Xin-Jie Huang, Zhen-Biao Yang","submitted_at":"2024-02-05T09:51:01Z","abstract_excerpt":"Owing to the presence of exceptional points (EPs), non-Hermitian (NH) systems can display intriguing topological phenomena without Hermitian analogs. However, experimental characterizations of exceptional topological invariants have been restricted to second-order EPs (EP2s) in classical or semiclassical systems. We here propose an NH multi-mode system with higher-order EPs, each of which is underlain by a multifold-degenerate multipartite entangled eigenstate. We implement the NH model by controllably coupling a Josephson-junction-based electronic mode to two microwave resonators. We experime"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.02839","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/2402.02839/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":"2026-07-05T09:42:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i0oR9s+f421UKkOeuEIZ4uoO14suAgaN/xgqrYZTnf0UdjZfAd/4S2ebye+pgO3igS5RrxdKAj5pdtqOA8QuBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T05:07:32.662146Z"},"content_sha256":"61a62390e03d1c43e299ea3787dcffe2d3b3ff7149c796f913a3b0d326ce1937","schema_version":"1.0","event_id":"sha256:61a62390e03d1c43e299ea3787dcffe2d3b3ff7149c796f913a3b0d326ce1937"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/bundle.json","state_url":"https://pith.science/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/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":"2026-07-06T05:07:32Z","links":{"resolver":"https://pith.science/pith/37KEBSWBJWNS5BYH3G6EZC4HDU","bundle":"https://pith.science/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/bundle.json","state":"https://pith.science/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/37KEBSWBJWNS5BYH3G6EZC4HDU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:37KEBSWBJWNS5BYH3G6EZC4HDU","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":"4fb4c5b8eb3c5b4a23bdfcbd144d52c2f11cedaf6670912461454a0ee0849539","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-02-05T09:51:01Z","title_canon_sha256":"57f935d508575b47e2264507c3e9b0d2d455efe130d120a368f4bd6b7b2394f1"},"schema_version":"1.0","source":{"id":"2402.02839","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.02839","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"arxiv_version","alias_value":"2402.02839v2","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.02839","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_12","alias_value":"37KEBSWBJWNS","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_16","alias_value":"37KEBSWBJWNS5BYH","created_at":"2026-07-05T09:42:22Z"},{"alias_kind":"pith_short_8","alias_value":"37KEBSWB","created_at":"2026-07-05T09:42:22Z"}],"graph_snapshots":[{"event_id":"sha256:61a62390e03d1c43e299ea3787dcffe2d3b3ff7149c796f913a3b0d326ce1937","target":"graph","created_at":"2026-07-05T09:42:22Z","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/2402.02839/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Owing to the presence of exceptional points (EPs), non-Hermitian (NH) systems can display intriguing topological phenomena without Hermitian analogs. However, experimental characterizations of exceptional topological invariants have been restricted to second-order EPs (EP2s) in classical or semiclassical systems. We here propose an NH multi-mode system with higher-order EPs, each of which is underlain by a multifold-degenerate multipartite entangled eigenstate. We implement the NH model by controllably coupling a Josephson-junction-based electronic mode to two microwave resonators. We experime","authors_text":"Chui-ping Yang, Fan Wu, Pei-Rong Han, Qi-ping Su, Ri-Hua Zheng, Shi-Biao Zheng, Shou-Bang Yang, Wen Ning, Xin-Jie Huang, Zhen-Biao Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-02-05T09:51:01Z","title":"Measuring topological invariants for higher-order exceptional points in quantum three-mode systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.02839","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:d207e00f10be4cfcbd3c433839487702d1baf6025a2f6a4d7a04aa13d466dc26","target":"record","created_at":"2026-07-05T09:42:22Z","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":"4fb4c5b8eb3c5b4a23bdfcbd144d52c2f11cedaf6670912461454a0ee0849539","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-02-05T09:51:01Z","title_canon_sha256":"57f935d508575b47e2264507c3e9b0d2d455efe130d120a368f4bd6b7b2394f1"},"schema_version":"1.0","source":{"id":"2402.02839","kind":"arxiv","version":2}},"canonical_sha256":"dfd440cac14d9b2e8707d9bc4c8b871d1c603b8b1f1bbb09559ac9712b0b7137","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfd440cac14d9b2e8707d9bc4c8b871d1c603b8b1f1bbb09559ac9712b0b7137","first_computed_at":"2026-07-05T09:42:22.764232Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:42:22.764232Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JmU6RHUK6h5b+wCRdWLrQZCJc+Oe1NCrTLNC4TAU4FdiWf/AS/p5VAWpF/nGfgn8KSU+vEff/fRHWRpk9t/hCA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:42:22.764904Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.02839","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d207e00f10be4cfcbd3c433839487702d1baf6025a2f6a4d7a04aa13d466dc26","sha256:61a62390e03d1c43e299ea3787dcffe2d3b3ff7149c796f913a3b0d326ce1937"],"state_sha256":"b46be7fb4081d72c0c8b0c0300f0043e9d6319ae1a7f68bf5a976a87b6a38999"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1MS+MPJ6DG7v8Ik0QuVrtuJ2u74M9zc953jc7zCxLFjTdM9UYnnBsdaSIFOKLSaobBlFGmBZ8ql7rph1B2sRBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T05:07:32.664088Z","bundle_sha256":"5295b6fd6f479e5ae7513c5c64eb3c63a0ef77f7c25c3a14a02cbb0b63fa20ce"}}