Control of Decoherence and Relaxation by Frequency Modulation of Heat Bath

Details Control of Decoherence and Relaxation by Frequency Modulation of Heat Bath Control of Decoherence and Relaxation by Frequency Modulation of Heat Bath

1999-04-26

arxiv.org/abs/quant-ph/9904087v1

Physics

Quantum Physics

5 text pages plus 3 figures. Submitted for publication in Phys. Rev. Lett

Scientific paper

We demonstrate in a very general fashion, considerable slowing down of decoherence and relaxation by fast frequency modulation of the system heat bath coupling. The slowing occurs as the decoherence rates are now determined by the spectral components of bath correlations which are shifted due to fast modulation. We present several examples including the slowing down of the heating of a trapped ion, where the system - bath interaction is not necessarily Markovian.

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