通过齐次化实现量子轨迹中跳变的涌现
Emergence of jumps in quantum trajectories via homogeneization
AI总结:
本文研究强噪声下量子轨迹的三时间尺度齐次化,先建立独立的极限半群结果,再证明其在 Meyer-Zheng 拓扑下弱收敛为纯跳 Markov 过程,而在 Skorokhod 拓扑下不收敛。
摘要:
在强噪声区域,我们研究量子轨迹(即出现在量子测量背景下的随机过程)的齐次化。当平均半群的生成元可被分离为三个不同的时间尺度时,我们首先描述一个齐次化极限半群。该结果具有独立意义,并且其表述超出了量子轨迹的范围。回到量子背景,我们证明在 Meyer-Zheng 拓扑下,时间连续的量子轨迹弱收敛于纯跳 Markov 过程的不连续轨迹。值得注意的是,这种收敛在通常的 Skorokhod 拓扑下不可能成立。
英文摘要:
In the strong noise regime, we study the homogeneization of quantum trajectories i.e. stochastic processes appearing in the context of quantum measurement. When the generator of the average semi-group can be separated into three distinct time scales, we start by describing a homogenized limiting semi-group. This result is of independent interest and is formulated outside of the scope of quantum trajectories. Going back to the quantum context, we show that, in the Meyer-Zheng topology, the time-continuous quantum trajectories converge weakly to the discontinuous trajectories of a pure jump Markov process. Notably, this convergence cannot hold in the usual Skorokhod topology.
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