Abstract
We note that the all-optical switching schemes are based on electromagnetically induced transparency. In this paper, we will study the optical switching based on another mechanism, i.e., local single-excitation resonance. The average-photon-number distribution in the steady state is studied in a system of two linearly coupled cavities, where one of cavity includs a two-level atom inside, and the cavity without the atom is driven by a classical light field. We find that the steady-state average-photon-number distribution of the two cavities can be controlled, which means that our scheme can be used as a quantum optical switching. Our finding may has potential application in quantum information and quantum computation.
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