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arXiv 1708.05293quant-ph
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含时边界条件诱导的强、弱单粒子非局域性

Strong and weak single particle nonlocality induced by time-dependent boundary conditions

S. V. Mousavi, A. Matzkin

摘要:

研究了含时边界条件下量子系统中的单粒子非定域性问题。我们首先证明,与先前的说法相反,没有强非定域性:一个量子态定域在一个无限高的移动壁的井的中心不修改壁的运动。然后我们证明了弱形式的非定域性的存在:当一个量子态在阱上扩展时,阱壁的运动瞬时在整个盒子上感应出电流密度。我们指出如何在原则上可以通过执行弱测量粒子的动量来测量这种电流密度。

英文摘要:

We investigate the issue of single particle nonlocality in a quantum system subjected to time-dependent boundary conditions. We first prove that contrary to earlier claims, there is no strong nonlocality: a quantum state localized at the center of a well with infinitely high moving walls is not modified by the wall's motion. We then show the existence of a weak form of nonlocality: when a quantum state is extended over the well, the wall's motion induces a current density all over the box instantaneously. We indicate how this current density can in principle be measured by performing weak measurements of the particle's momentum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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