arXiv:1207.2828 · Physical Review A

Effects of dipole-dipole interaction on the transmitted spectrum of two-level atoms trapped in an optical cavity

Yuqing Zhang, Lei Tan, P. F. Barker

Published Apr 23, 2014• 30 citations

Abstract

The transmission spectrum of two dipole-coupled atoms interacting with a single-mode optical cavity in the strong coupling regime is investigated theoretically for the lower and higher excitation cases. The dressed states containing the dipole-dipole interaction (DDI) are obtained by transforming the two-atom system into an effective single-atom system. We find that the DDI can enhance the effects resulting from the positive atom-cavity detunings but weakens them for the negative detuning cases for the lower excitation, which causes the spectrum to exhibit two asymmetric peaks with shifted heights and positions. For the higher excitation cases, the DDI augments the atomic saturation and leads to the deforming of the spectrum. Furthermore, the large DDI can cause the atom and the cavity to decouple, producing a singlet of the normal-mode spectrum.

DOI: 10.1103/physreva.89.043838

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