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arXiv 1604.04596quant-ph
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粒子通过嵌套马赫-曾德尔干涉仪的路径

Particle Path Through a Nested Mach-Zehnder Interferometer

Robert B. Griffiths

摘要:

利用量子力学的自洽历史公式分析了光子通过嵌套Mach-Zehnder干涉仪到达探测器的可能路径,并利用一组弱测量(但不是弱值)进行了验证.结果与Vaidman [ Phys.]的分析不一致。修订版本\ A 87(2013)052104 ],并同意Li等人得出的结论。[物理学]修订版本\ A 88(2013)046102 ]。然而,分析对Salih等人的说法提出了严重质疑。(作者包括Li et al.)[物理学]修订版本\ Lett. 110(2013)170502 ]构建了一种用于反事实通信的协议:一种即使包含可忽略数量的光子也可以传输信息的信道。

英文摘要:

Possible paths of a photon passing through a nested Mach-Zehnder interferometer on its way to a detector are analyzed using the consistent histories formulation of quantum mechanics, and confirmed using a set of weak measurements (but not weak values). The results disagree with an analysis by Vaidman [ Phys.\ Rev.\ A 87 (2013) 052104 ], and agree with a conclusion reached by Li et al.\ [ Phys.\ Rev.\ A 88 (2013) 046102 ]. However, the analysis casts serious doubt on the claim of Salih et al.\ (whose authorship includes Li et al.) [ Phys.\ Rev.\ Lett.\ 110 (2013) 170502 ] to have constructed a protocol for counterfactual communication: a channel which can transmit information even though it contains a negligible number of photons.

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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