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Article overview
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Control relaxation via dephasing: an exact quantum state diffusion study | | Jun Jing
; Ting Yu
; Chi-Hang Lam
; J. Q. You
; Lian-Ao Wu
; | | Date: |
21 Sep 2017 | | Abstract: | Dynamical decoupling as one of quantum control strategies aimed at
suppressing quantum decoherence adopt the popular philosophy that the disorder
in the unitary evolution of the open quantum system caused by environmental
noises should be neutralized by a sequence of ordered or well-designed external
operations acting on the system. This work studies the exact solution of
quantum-state-diffusion equations by mixing two channels of environmental
noises, i.e., relaxation (dissipation) and dephasing. It is interesting to find
in two-level and three-level atomic systems, that a non-Markovian relaxation or
dissipation process can be suppressed by a Markovian dephasing noise. The
discovery results in an anomalous control strategy by coordinating relaxation
and dephasing processes. Our approach opens up a novel revenue towards noise
control strategy with no artificial manipulation over the open quantum systems. | | Source: | arXiv, 1709.7225 | | Services: | Forum | Review | PDF | Favorites | |
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