Fano-Agarwal couplings and non-rotating wave approximation in single-photon timed Dicke subradiance
1 Department of Physics, Texas A&M University - College Station, TX 77843, USA
2 Department of Physics, University of Michigan - Ann Arbor, MI 48109-1040, USA
Received: 7 March 2016
Accepted: 3 May 2016
Recently a new class of single-photon timed Dicke (TD) subradiant states has been introduced with possible applications in single-photon–based quantum information storage and on demand ultrafast retrieval (Scully M. O., Phys. Rev. Lett., 115 (2015) 243602). However, the influence of any kind of virtual processes on the decay of these new kind of subradiant states has been left as an open question. In the present paper, we focus on this problem in detail. In particular, we investigate how pure Fano-Agarwal couplings and other virtual processes arising from non-rotating wave approximation impact the decay of otherwise sub- and superradiant states. In addition to the overall virtual couplings among all TD states, we also focus on the dominant role played by the couplings between specific TD states.
PACS: 42.50.Ct – Quantum description of interaction of light and matter; related experiments / 42.50.Nn – Quantum optical phenomena in absorbing, amplifying, dispersive and conducting media; cooperative phenomena in quantum optical systems / 42.50.Dv – Quantum state engineering and measurements
© EPLA, 2016