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Photons can hide where they have been [Editors' Pick]

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Abstract

Recently, the nested Mach–Zehnder interferometer [Phys. Rev. Lett. 111, 240402 (2013)] was modified by adding Dove prisms in a paper [Quantum Stud.: Math. Found. 2, 255 (2015)], and an interesting result is that, after the Dove prisms were inserted, a signal at the first mirror of the nested interferometer was obtained. But, according to the former original paper, the photons have never been present near that mirror. In this work, we interpret this result naturally by resorting to the three-path interference method. Moreover, we find that even though the photons have been somewhere, they can hide the trace of being there.

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DOI:10.3788/COL202119.012701

所属栏目:Quantum Optics and Quantum Information

基金项目:This work was supported by the National Natural Science Foundation of China (No. 11804225). X. Feng is sponsored by Shanghai Gaofeng & Gaoyuan Project for University Academic Program Development.

收稿日期:2020-07-04

录用日期:2020-09-04

网络出版日期:2020-11-26

作者单位    点击查看

袁其章:Department of Physics, Mathematics and Science College of Shanghai Normal University, Shanghai 200234, China
冯勋立:Department of Physics, Mathematics and Science College of Shanghai Normal University, Shanghai 200234, China

联系人作者:袁其章(lphysics@shnu.edu.cn); 冯勋立(xlfeng@shnu.edu.cn);

备注:This work was supported by the National Natural Science Foundation of China (No. 11804225). X. Feng is sponsored by Shanghai Gaofeng & Gaoyuan Project for University Academic Program Development.

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引用该论文

Qizhang Yuan, Xunli Feng, "Photons can hide where they have been," Chinese Optics Letters 19(1), 012701 (2021)

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