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arXiv 1107.2883quant-ph
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量子干涉的振幅控制

Amplitude control of quantum interference

W. J. Mullin, F. Laloë

摘要:

通常,干涉效应的振荡由相对相位控制。我们表明,改变量子波的振幅,例如通过改变分束器的反射率,也可以导致量子振荡,甚至贝尔违反当地的现实主义。本文首先从理论上研究了任意光源数和分束器透过率的Hong-Ou-Mandel实验的推广。然后,我们考虑一个贝尔型实验与两个独立的源,并发现强烈的违反当地的现实主义为任意大的源数$N$,小$N$,一个运营商的措施基本上是相对相位的源和其他的强度。由于在实验上,测量光晶格中原子数的奇偶性比测量原子数本身更容易,我们假设探测器测量的是奇偶性。

英文摘要:

Usually, the oscillations of interference effects are controlled by relative phases. We show that varying the amplitudes of quantum waves, for instance by changing the reflectivity of beam splitters, can also lead to quantum oscillations and even to Bell violations of local realism. We first study theoretically a generalization of the Hong-Ou-Mandel experiment to arbitrary source numbers and beam splitter transmittivity. We then consider a Bell type experiment with two independent sources, and find strong violations of local realism for arbitrarily large source number $N$; for small $N$, one operator measures essentially the relative phase of the sources and the other their intensities. Since, experimentally, one can measure the parity of the number of atoms in an optical lattice more easily than the number itself, we assume that the detectors measure parity.

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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