{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GB6VPNIU4KBLQMR2UCDMTVAWFD","short_pith_number":"pith:GB6VPNIU","canonical_record":{"source":{"id":"1810.00581","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-01T08:54:39Z","cross_cats_sorted":[],"title_canon_sha256":"13f97cd27804866cf004753071efaeb7984891dff284fc0cee7575e2e62e4c27","abstract_canon_sha256":"56a4d4c39ee0d3fd78ce2d97c72cb001b331b47b31341da28542ce3a9f5fbd7b"},"schema_version":"1.0"},"canonical_sha256":"307d57b514e282b8323aa086c9d41628ebdde2b8d2190b25a86726b499d0678c","source":{"kind":"arxiv","id":"1810.00581","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.00581","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"arxiv_version","alias_value":"1810.00581v2","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00581","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"pith_short_12","alias_value":"GB6VPNIU4KBL","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GB6VPNIU4KBLQMR2","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GB6VPNIU","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GB6VPNIU4KBLQMR2UCDMTVAWFD","target":"record","payload":{"canonical_record":{"source":{"id":"1810.00581","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-01T08:54:39Z","cross_cats_sorted":[],"title_canon_sha256":"13f97cd27804866cf004753071efaeb7984891dff284fc0cee7575e2e62e4c27","abstract_canon_sha256":"56a4d4c39ee0d3fd78ce2d97c72cb001b331b47b31341da28542ce3a9f5fbd7b"},"schema_version":"1.0"},"canonical_sha256":"307d57b514e282b8323aa086c9d41628ebdde2b8d2190b25a86726b499d0678c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:09.263666Z","signature_b64":"7RTD70fHepQYsQC9bJ/9pbDglFqspvk67v84JhjVGIRDdGJq523PTmSNtolOm7o1FN+eNYSeF1Eu58Fh/dnKAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"307d57b514e282b8323aa086c9d41628ebdde2b8d2190b25a86726b499d0678c","last_reissued_at":"2026-05-17T23:53:09.263061Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:09.263061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.00581","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":"2026-05-17T23:53:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jCqCg17QN6FRhgrh2st2TCf5V0jaTa9h129Rkxbh0GxrT0+M4G46hoMMBpkfx73xknpFVe5bOPLsLMKwBtv6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:34:20.127263Z"},"content_sha256":"cbbae794bafb40375c40ccf4cfde8077b46398d3a2026077141fa8a6d7bda449","schema_version":"1.0","event_id":"sha256:cbbae794bafb40375c40ccf4cfde8077b46398d3a2026077141fa8a6d7bda449"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GB6VPNIU4KBLQMR2UCDMTVAWFD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Arbitrary order exceptional point induced by photonic spin-orbit interaction in coupled resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Bo Hou, C. T. Chan, Shubo Wang, Weixin Lu, Yuntian Chen, Z. Q. Zhang","submitted_at":"2018-10-01T08:54:39Z","abstract_excerpt":"Many novel properties of non-Hermitian systems are found at or near the exceptional points-branch points of complex energy surfaces at which eigenvalues and eigenvectors coalesce. In particular, higher-order exceptional points can result in optical structures that are ultrasensitive to external perturbations. Here we show that an arbitrary order exceptional point can be achieved in a simple system consisting of identical resonators placed near a waveguide. Unidirectional coupling between any two chiral dipolar states of the resonators mediated by the waveguide mode leads to the exceptional poi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00581","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":""},"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":"2026-05-17T23:53:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"S3/w+MGw6hndEp2bK1uLDhx5SVkveuvYIU58FSnA+mNilKjrGlNZ4wgOtVCaG6SyzdTNjCJlQ95edj3M21J9AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T18:34:20.128042Z"},"content_sha256":"c4b83291549d29f351447510e2daf6753848ca304c8e973b7d6cba7f7397ac2c","schema_version":"1.0","event_id":"sha256:c4b83291549d29f351447510e2daf6753848ca304c8e973b7d6cba7f7397ac2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/bundle.json","state_url":"https://pith.science/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/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":"2026-05-27T18:34:20Z","links":{"resolver":"https://pith.science/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD","bundle":"https://pith.science/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/bundle.json","state":"https://pith.science/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GB6VPNIU4KBLQMR2UCDMTVAWFD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GB6VPNIU4KBLQMR2UCDMTVAWFD","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":"56a4d4c39ee0d3fd78ce2d97c72cb001b331b47b31341da28542ce3a9f5fbd7b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-01T08:54:39Z","title_canon_sha256":"13f97cd27804866cf004753071efaeb7984891dff284fc0cee7575e2e62e4c27"},"schema_version":"1.0","source":{"id":"1810.00581","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.00581","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"arxiv_version","alias_value":"1810.00581v2","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.00581","created_at":"2026-05-17T23:53:09Z"},{"alias_kind":"pith_short_12","alias_value":"GB6VPNIU4KBL","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GB6VPNIU4KBLQMR2","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GB6VPNIU","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:c4b83291549d29f351447510e2daf6753848ca304c8e973b7d6cba7f7397ac2c","target":"graph","created_at":"2026-05-17T23:53:09Z","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"},"paper":{"abstract_excerpt":"Many novel properties of non-Hermitian systems are found at or near the exceptional points-branch points of complex energy surfaces at which eigenvalues and eigenvectors coalesce. In particular, higher-order exceptional points can result in optical structures that are ultrasensitive to external perturbations. Here we show that an arbitrary order exceptional point can be achieved in a simple system consisting of identical resonators placed near a waveguide. Unidirectional coupling between any two chiral dipolar states of the resonators mediated by the waveguide mode leads to the exceptional poi","authors_text":"Bo Hou, C. T. Chan, Shubo Wang, Weixin Lu, Yuntian Chen, Z. Q. Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-01T08:54:39Z","title":"Arbitrary order exceptional point induced by photonic spin-orbit interaction in coupled resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.00581","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:cbbae794bafb40375c40ccf4cfde8077b46398d3a2026077141fa8a6d7bda449","target":"record","created_at":"2026-05-17T23:53:09Z","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":"56a4d4c39ee0d3fd78ce2d97c72cb001b331b47b31341da28542ce3a9f5fbd7b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-10-01T08:54:39Z","title_canon_sha256":"13f97cd27804866cf004753071efaeb7984891dff284fc0cee7575e2e62e4c27"},"schema_version":"1.0","source":{"id":"1810.00581","kind":"arxiv","version":2}},"canonical_sha256":"307d57b514e282b8323aa086c9d41628ebdde2b8d2190b25a86726b499d0678c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"307d57b514e282b8323aa086c9d41628ebdde2b8d2190b25a86726b499d0678c","first_computed_at":"2026-05-17T23:53:09.263061Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:09.263061Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7RTD70fHepQYsQC9bJ/9pbDglFqspvk67v84JhjVGIRDdGJq523PTmSNtolOm7o1FN+eNYSeF1Eu58Fh/dnKAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:09.263666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.00581","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbbae794bafb40375c40ccf4cfde8077b46398d3a2026077141fa8a6d7bda449","sha256:c4b83291549d29f351447510e2daf6753848ca304c8e973b7d6cba7f7397ac2c"],"state_sha256":"1df442119702ad897ce334a47c1444201cb5cb83178f98099e6bc6c25bc6460b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uVOsGXSnIeljItznQuZoiy1RsrimqydfX/R6EFx0sboFsgwhqhJP+QW/LJ9OPWw+4KaCvf3V/9mZG7Xa+R+2Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T18:34:20.131915Z","bundle_sha256":"5194fb78ce342323543c59e5db9ad82564322ad239cc018fc3473314763318e8"}}