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首页> 外文期刊>Journal of physics, A. Mathematical and theoretical >Decompositions of Hilbert spaces, stability analysis and convergence probabilities for discrete-time quantum dynamical semigroups
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Decompositions of Hilbert spaces, stability analysis and convergence probabilities for discrete-time quantum dynamical semigroups

机译:离散时间量子动力学半群的希尔伯特空间分解,稳定性分析和收敛概率

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摘要

We investigate convergence properties of discrete-time semigroup quantum dynamics, including asymptotic stability, probability and speed of convergence to pure states and subspaces. These properties are of interest in both the analysis of uncontrolled evolutions and the engineering of controlled dynamics for quantum information processing. Our results include two Hilbert space decompositions that allow for deciding the stability of the subspace of interest and for estimating of the speed of convergence, as well as a formula to obtain the limit probability distribution for a set of orthogonal invariant subspaces.
机译:我们研究离散时间半群量子动力学的收敛性质,包括渐近稳定性,收敛到纯态和子空间的概率和速度。这些特性在量子信息处理的不受控制的演化分析和受控制的动力学工程中都令人感兴趣。我们的结果包括两个Hilbert空间分解,这些分解可用来确定感兴趣子空间的稳定性并估计收敛速度,以及一个用于获取一组正交不变子空间的极限概率分布的公式。

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