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arXiv 0906.1885quant-ph
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分束器输出可因子分解的条件

Conditions for Factorizable Output From a Beam splitter

S. C. Springer, Jinhyoung Lee, M. Bellini, M. S. Kim

摘要:

分束器是光学实验室中最重要的设备之一,因为它的轻便性和多功能性;在各种量子系统中可以找到等效设备来耦合两个子系统或干涉它们。虽然两个独立的输入场在分束器处叠加以给出相关输出是正常的,但是相同的高斯态在那里干涉以产生完全独立的输出场。我们证明了具有相同方差的高斯态是唯一能产生可因子分解输出场的态。

英文摘要:

A beam splitter is one of the most important devices in an optics laboratory because of its handiness and versatility; equivalent devices are found in various quantum systems to couple two subsystems or to interfere them. While it is normal that two independent input fields are superposed at the beam splitter to give correlated outputs, identical Gaussian states interfere there to produce totally independent output fields. We prove that Gaussian states with same the variance are the only states which bring about factorizable output fields.

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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