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Loss of coherence of pure and mixed states for a multimode radiation field interacting nonlinearly with a qubit
Journal article   Peer reviewed

Loss of coherence of pure and mixed states for a multimode radiation field interacting nonlinearly with a qubit

Abdel-Baset A. Mohamed
Journal of Russian laser research, Vol.32(6), pp.518-527
01/10/2011
DOI: https://doi.org/10.1007/s10946-011-9242-y

Abstract

Article Lasers Microwaves Optical Devices Optics Photonics Physics Physics and Astronomy RF and Optical Engineering
We study the loss of coherence of pure and mixed states for a nonlinear interaction between the multimode field and a qubit. We calculate analytically partial entropies of the qubit and field subsystems, which are used to measure the loss of coherence. We find that the loss of coherence loss is sensitive to the initial field states, the number of modes, and the nonlinear-interaction parameter.

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