{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:74S7B5N7TKI4P2UTV7VAFWGNLR","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":"cb5c3d565c585d0e8f680d9f1e87003f843bef14d0395d3bf1957aecb1b3f9a0","cross_cats_sorted":["cond-mat.mtrl-sci","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-12-29T22:54:00Z","title_canon_sha256":"4838f3603f24de440e78a8a26e3877dce6643648b995dd3536cb4ffbcdb0aef7"},"schema_version":"1.0","source":{"id":"1812.11443","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.11443","created_at":"2026-05-17T23:57:11Z"},{"alias_kind":"arxiv_version","alias_value":"1812.11443v1","created_at":"2026-05-17T23:57:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.11443","created_at":"2026-05-17T23:57:11Z"},{"alias_kind":"pith_short_12","alias_value":"74S7B5N7TKI4","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"74S7B5N7TKI4P2UT","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"74S7B5N7","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:44814c9f40ac1b26aa29b3135de936df23354475dd7cf9d0c1d0589e5768cc62","target":"graph","created_at":"2026-05-17T23:57:11Z","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":"We investigate $\\mathcal{PT}$-symmetric coherent perfect absorbers (CPAs) in the TE mode solution of a linear homogeneous optical system surrounded by graphene sheets. It is revealed that presence of graphene sheets contributes the enhancement of absorption in a coherent perfect absorber. We derive exact analytic expressions, and work through their possible impacts on lasing threshold and CPA conditions. We point out roles of each parameter governing optical system with graphene and show that optimal conditions of these parameters give rise to enhancement and possible experimental realization ","authors_text":"Murat Tas, Mustafa Sarisaman","cross_cats":["cond-mat.mtrl-sci","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-12-29T22:54:00Z","title":"$\\mathcal{P}\\mathcal{T}$-Symmetric Coherent Perfect Absorber with Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.11443","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":"sha256:6e8bfc75d20a5a80ccc8e707490d2518ca421317f4cc255f7fd1e6587c748954","target":"record","created_at":"2026-05-17T23:57:11Z","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":"cb5c3d565c585d0e8f680d9f1e87003f843bef14d0395d3bf1957aecb1b3f9a0","cross_cats_sorted":["cond-mat.mtrl-sci","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-12-29T22:54:00Z","title_canon_sha256":"4838f3603f24de440e78a8a26e3877dce6643648b995dd3536cb4ffbcdb0aef7"},"schema_version":"1.0","source":{"id":"1812.11443","kind":"arxiv","version":1}},"canonical_sha256":"ff25f0f5bf9a91c7ea93afea02d8cd5c7b19ddb43f8f493201ab9de1ce452710","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff25f0f5bf9a91c7ea93afea02d8cd5c7b19ddb43f8f493201ab9de1ce452710","first_computed_at":"2026-05-17T23:57:11.947865Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:11.947865Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JJlvkGZOqYwzILtpvzRpItAAkpcNmRlibnbzSWOfuB3tjf540X/ILC5IX6cI6lnJjW/GxBgme8UEZ64ZHWJfDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:11.948378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.11443","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e8bfc75d20a5a80ccc8e707490d2518ca421317f4cc255f7fd1e6587c748954","sha256:44814c9f40ac1b26aa29b3135de936df23354475dd7cf9d0c1d0589e5768cc62"],"state_sha256":"dee7738ea45fa961621d5935e39ae621be289d57b9310051f269ae0ddff63add"}