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Journal of Modern Optics

Quantum coherence of optical systems and dissipation

S. T. Gevorgyan, V. O. Chaltykyan

Published Jul 27, 2004• 2 citations
Publisher

Abstract

We show that in an open optical system with one-photon dissipation formation of a stationary even coherent superposition state is possible, which is a consequence of the fact that the lifetime of the optical system in a coherent superposition state is different for even and odd states.
DOI
10.1080/09500340408232501

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The process of the simultaneous absorption of three photons in a medium possessing weak one-photon absorption is analyzed. The mode experiencing absorption is perturbed externally via a three-photon parametric process. It is shown that a steady-state, three-component superposition state of light can exist in this system in the range where the amplitude of the state is small (small perturbations of the system). The latter condition is due to the fact that, in this range of interactions, the field spends significantly more time in one of three types of superposition states of light that form an ensemble of quantum trajectories of the system than in the other two.
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