Efficient and exact numerical approach for many multi-level systems in open system CQED. (26th April 2016)

• Record Type: Journal Article
• Authors: Gegg, Michael; Richter, Marten
• Is Part Of: New journal of physics. Volume 18:Number 4(2016:Apr.)
• Publication Date: 2016-04-26
• Subjects: density matrix theory -- emitter-cavity problem -- many multi-level systems; 0365Yz -- 4250Ar -- 4250Pq -- 7845+h; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/18/4/043037
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: In this paper we generalize the numerically exact expansion scheme for many two-level systems coupled to a bosonic (cavity) mode under open system conditions to the case of multi-level systems. For the two-level systems the method is derived from physical and intuitive arguments and the efficient numerical modeling up to hundreds of two-level systems is described. We thereby perform an analysis that allows a natural generalization to multi-level systems. The focus of the paper lies on a comprehensible view on the underlying physics. This facilitates direct application of the method and the use of additional generalizations and approximations.