{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:5CRE6UKYV7OJ2PVJJK35AUPQLN","short_pith_number":"pith:5CRE6UKY","schema_version":"1.0","canonical_sha256":"e8a24f5158afdc9d3ea94ab7d051f05b667f4fe6f98a6c33b5ac36eaff8d46c6","source":{"kind":"arxiv","id":"1812.03360","version":1},"attestation_state":"computed","paper":{"title":"Quantum interference and exceptional points","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Stefano Longhi","submitted_at":"2018-12-08T18:06:42Z","abstract_excerpt":"Exceptional points (EPs), i.e. branch point singularities of non-Hermitian Hamiltonians, are ubiquitous in optics. So far, the signatures of EPs have been mostly studied assuming classical light.\n  In the passive parity-time ($\\mathcal{PT}$) optical coupler, a fingerprint of EPs resulting from the coalescence of two resonance modes is a qualitative change of the photon decay law, from damped Rabi-like oscillations to transparency, as the EP is crossed by increasing the loss rate. However, when probed by non-classical states of light, quantum interference can hide EPs. Here it is shown that, un"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1812.03360","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-12-08T18:06:42Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"d5f276b17838685e3a2c5acf3dc42d7356c973731cd98e1faec5ce378c81ddf5","abstract_canon_sha256":"86b8047c6df7d06e984af7688bacd11b4e39acda621027d17c5d30c87c303176"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:46.453200Z","signature_b64":"eZFp6zVo15o0yQkLj7rTxYDLXDLpOP0bArN0orutI11ubZeUrSc7nyt+9FC2yfWr0Xg9cCL7G6T426736RvdAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e8a24f5158afdc9d3ea94ab7d051f05b667f4fe6f98a6c33b5ac36eaff8d46c6","last_reissued_at":"2026-05-17T23:58:46.452685Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:46.452685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum interference and exceptional points","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Stefano Longhi","submitted_at":"2018-12-08T18:06:42Z","abstract_excerpt":"Exceptional points (EPs), i.e. branch point singularities of non-Hermitian Hamiltonians, are ubiquitous in optics. So far, the signatures of EPs have been mostly studied assuming classical light.\n  In the passive parity-time ($\\mathcal{PT}$) optical coupler, a fingerprint of EPs resulting from the coalescence of two resonance modes is a qualitative change of the photon decay law, from damped Rabi-like oscillations to transparency, as the EP is crossed by increasing the loss rate. However, when probed by non-classical states of light, quantum interference can hide EPs. Here it is shown that, un"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.03360","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1812.03360","created_at":"2026-05-17T23:58:46.452755+00:00"},{"alias_kind":"arxiv_version","alias_value":"1812.03360v1","created_at":"2026-05-17T23:58:46.452755+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.03360","created_at":"2026-05-17T23:58:46.452755+00:00"},{"alias_kind":"pith_short_12","alias_value":"5CRE6UKYV7OJ","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_16","alias_value":"5CRE6UKYV7OJ2PVJ","created_at":"2026-05-18T12:32:08.215937+00:00"},{"alias_kind":"pith_short_8","alias_value":"5CRE6UKY","created_at":"2026-05-18T12:32:08.215937+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN","json":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN.json","graph_json":"https://pith.science/api/pith-number/5CRE6UKYV7OJ2PVJJK35AUPQLN/graph.json","events_json":"https://pith.science/api/pith-number/5CRE6UKYV7OJ2PVJJK35AUPQLN/events.json","paper":"https://pith.science/paper/5CRE6UKY"},"agent_actions":{"view_html":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN","download_json":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN.json","view_paper":"https://pith.science/paper/5CRE6UKY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1812.03360&json=true","fetch_graph":"https://pith.science/api/pith-number/5CRE6UKYV7OJ2PVJJK35AUPQLN/graph.json","fetch_events":"https://pith.science/api/pith-number/5CRE6UKYV7OJ2PVJJK35AUPQLN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN/action/storage_attestation","attest_author":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN/action/author_attestation","sign_citation":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN/action/citation_signature","submit_replication":"https://pith.science/pith/5CRE6UKYV7OJ2PVJJK35AUPQLN/action/replication_record"}},"created_at":"2026-05-17T23:58:46.452755+00:00","updated_at":"2026-05-17T23:58:46.452755+00:00"}