{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:NDL5CTS6VH46BE4JALQILSVVJR","short_pith_number":"pith:NDL5CTS6","schema_version":"1.0","canonical_sha256":"68d7d14e5ea9f9e0938902e085cab54c41c1d85fdefd1bf224b7cc808f0b0646","source":{"kind":"arxiv","id":"1805.10876","version":1},"attestation_state":"computed","paper":{"title":"PT-symmetric photonic quantum systems with gain and loss do not exist","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Alexander Szameit, Stefan Scheel","submitted_at":"2018-05-28T11:48:18Z","abstract_excerpt":"We discuss the impact of gain and loss on the evolution of photonic quantum states and find that PT-symmetric quantum optics in gain/loss systems is not possible. Within the framework of macroscopic quantum electrodynamics we show that gain and loss are associated with non-compact and compact operator transformations, respectively. This implies a fundamentally different way in which quantum correlations between a quantum system and a reservoir are built up and destroyed."},"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":"1805.10876","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-28T11:48:18Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"917b87fbe3240f2ecee3993268e2586557f63862bbc1ee9fdb8cc8d05888ddbb","abstract_canon_sha256":"2f2d6bd011a5c20582ad49fa6a48176cdc6a3a7e88b96deacb19a9dea7bf10a9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:09:13.724291Z","signature_b64":"b+pr7lFUAemI9QtNWx5ZqE5brxZITC27yY9d8wLOjd2xtWJXHGbZQBDYfLzaeEeEk31OEo79vKbf09GcRWkEAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68d7d14e5ea9f9e0938902e085cab54c41c1d85fdefd1bf224b7cc808f0b0646","last_reissued_at":"2026-05-18T00:09:13.723621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:09:13.723621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"PT-symmetric photonic quantum systems with gain and loss do not exist","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Alexander Szameit, Stefan Scheel","submitted_at":"2018-05-28T11:48:18Z","abstract_excerpt":"We discuss the impact of gain and loss on the evolution of photonic quantum states and find that PT-symmetric quantum optics in gain/loss systems is not possible. Within the framework of macroscopic quantum electrodynamics we show that gain and loss are associated with non-compact and compact operator transformations, respectively. This implies a fundamentally different way in which quantum correlations between a quantum system and a reservoir are built up and destroyed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10876","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":"1805.10876","created_at":"2026-05-18T00:09:13.723748+00:00"},{"alias_kind":"arxiv_version","alias_value":"1805.10876v1","created_at":"2026-05-18T00:09:13.723748+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.10876","created_at":"2026-05-18T00:09:13.723748+00:00"},{"alias_kind":"pith_short_12","alias_value":"NDL5CTS6VH46","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_16","alias_value":"NDL5CTS6VH46BE4J","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_8","alias_value":"NDL5CTS6","created_at":"2026-05-18T12:32:40.477152+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/NDL5CTS6VH46BE4JALQILSVVJR","json":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR.json","graph_json":"https://pith.science/api/pith-number/NDL5CTS6VH46BE4JALQILSVVJR/graph.json","events_json":"https://pith.science/api/pith-number/NDL5CTS6VH46BE4JALQILSVVJR/events.json","paper":"https://pith.science/paper/NDL5CTS6"},"agent_actions":{"view_html":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR","download_json":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR.json","view_paper":"https://pith.science/paper/NDL5CTS6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1805.10876&json=true","fetch_graph":"https://pith.science/api/pith-number/NDL5CTS6VH46BE4JALQILSVVJR/graph.json","fetch_events":"https://pith.science/api/pith-number/NDL5CTS6VH46BE4JALQILSVVJR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR/action/storage_attestation","attest_author":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR/action/author_attestation","sign_citation":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR/action/citation_signature","submit_replication":"https://pith.science/pith/NDL5CTS6VH46BE4JALQILSVVJR/action/replication_record"}},"created_at":"2026-05-18T00:09:13.723748+00:00","updated_at":"2026-05-18T00:09:13.723748+00:00"}