{"paper":{"title":"Reversing the Pump-Dependence of a Laser at an Exceptional Point","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","nlin.CD"],"primary_cat":"physics.optics","authors_text":"C. Deutsch, G. Strasser, H. E. T\\\"ureci, J. Sch\\\"oberl, K. Unterrainer, M. Brandstetter, M. Liertzer, P. Klang, S. Rotter","submitted_at":"2014-04-07T16:27:02Z","abstract_excerpt":"When two resonant modes in a system with gain or loss coalesce in both their resonance position and their width, a so-called \"Exceptional Point\" occurs which acts as a source of non-trivial physics in a diverse range of systems. Lasers provide a natural setting to study such \"non-Hermitian degeneracies\", since they feature resonant modes and a gain material as their basic constituents. Here we show that Exceptional Points can be conveniently induced in a photonic molecule laser by a suitable variation of the applied pump. Using a pair of coupled micro-disk quantum cascade lasers, we demonstrat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.1837","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"}