Collective spontaneous emission beyond the rotating-wave approximation

Yong Li, Jörg Evers, Hang Zheng, and Shi-Yao Zhu
Phys. Rev. A 85, 053830 – Published 22 May 2012

Abstract

The collective spontaneous emission of N multilevel atoms is studied in optical vector theory and without applying the rotating-wave approximation. The counter-rotating terms are included using a unitary transformation method. We analyze the decay dynamics starting from two initial conditions, the standard Dicke and timed Dicke states. In addition to the dependence on ensemble volume and density, we also study the effect of the ensemble geometry on cooperative emission for spheres, cubes, and quasi-two-dimensional shapes in different orientations. Finally, time-dependent cooperative spontaneous emission rates are introduced and investigated.

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  • Received 28 March 2012

DOI:https://doi.org/10.1103/PhysRevA.85.053830

©2012 American Physical Society

Authors & Affiliations

Yong Li1,2, Jörg Evers1,2, Hang Zheng3, and Shi-Yao Zhu1

  • 1Beijing Computational Science Research Center, Beijing 100084, China
  • 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
  • 3Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, China

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Vol. 85, Iss. 5 — May 2012

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