{ "id": "1406.3685", "version": "v2", "published": "2014-06-14T06:01:31.000Z", "updated": "2015-03-07T11:22:30.000Z", "title": "Superradiance and enhanced luminescence from ensembles of a few self-assembled quantum dots", "authors": [ "Wildan Abdussalam", "Paweł Machnikowski" ], "comment": "5 pages, 3 figures; moderate changes and extensions", "journal": "Phys. Rev. B 90, 125307 (2014)", "doi": "10.1103/PhysRevB.90.125307", "categories": [ "cond-mat.mes-hall", "quant-ph" ], "abstract": "We study the evolution of photoluminescence (PL) from homogeneous and inhomogeneous ensembles of a few coupled QDs. We discuss the relation between signals from a given QD ensemble under strong and weak excitation (full inversion and linear response regimes): A system homogeneous enough to manifest superradiant emission when strongly inverted shows a non-exponential decay of the PL signal under spatially coherent weak excitation. In an inhomogeneous ensemble the PL decay is always nearly exponential with a qualitatively different form of the time dependence in the two excitation regimes and with a higher rate under weak excitation.", "revisions": [ { "version": "v1", "updated": "2014-06-14T06:01:31.000Z", "comment": "5 pages, 3 figures", "journal": null, "doi": null }, { "version": "v2", "updated": "2015-03-07T11:22:30.000Z" } ], "analyses": { "subjects": [ "78.67.Hc", "42.50.Ct", "03.65.Yz" ], "keywords": [ "self-assembled quantum dots", "enhanced luminescence", "superradiance", "manifest superradiant emission", "spatially coherent weak excitation" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Physical Review B", "year": 2014, "month": "Sep", "volume": 90, "number": 12, "pages": 125307 }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2014PhRvB..90l5307A" } } }