Single photon transport properties in coupled cavity arrays nonlocally coupled to a two-level atom in the presence of dissipation

doi:10.1088/1674-1056/23/2/024202

Abstract We discuss the effects of dissipation on the behavior of single photon transport in a system of coupled cavity arrays, with the two nearest cavities nonlocally coupled to a two-level atom. The single photon transmission amplitude is solved exactly by employing the quasi-boson picture. We investigate two different situations of local and nonlocal couplings, respectively. Comparing the dissipative case with the nondissipative one reveals that the dissipation of the system increases the middle dip and lowers the peak of the single photon transmission amplitudes, broadening the line width of the transport spectrum. It should be noted that the influence of the cavity dissipation to the single photon transport spectrum is asymmetric. By comparing the nonlocal coupling with the local one, one can find that the enhancement of the middle dip of single photon transmission amplitudes is mostly caused by the atom dissipation and that the reduced peak is mainly caused by the cavity dissipation, no matter whether it is a nonlocal or local coupling case. Whereas in the nonlocal coupling case, when the coupling strength gets stronger, the cavity dissipation has a greater effect on the single photon transport spectrum and the atom dissipation affection becomes weak, so it can be ignored.

Keywords: single photon transport dissipative coupled cavity arrays dissipative two-level atom local and nonlocal couplings

Received: 17 April 2013
Revised: 11 June 2013
Accepted manuscript online:

PACS:	42.50.Pq	(Cavity quantum electrodynamics; micromasers)
	37.30.+i	(Atoms, molecules, andions incavities)
	42.50.Ct	(Quantum description of interaction of light and matter; related experiments)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10704031, 10874235, 11274148, and 10934010).

Corresponding Authors: Tan Lei
E-mail: tanlei@lzu.edu.cn

About author: 42.50.Pq; 37.30.+i; 42.50.Ct

Cite this article:

Hai Lian (海莲), Tan Lei (谭磊), Feng Jin-Shan (冯金山), Xu Wen-Bin (徐文斌), Wang Bin (王彬) Single photon transport properties in coupled cavity arrays nonlocally coupled to a two-level atom in the presence of dissipation 2014 Chin. Phys. B 23 024202

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