论文标题
较高维的Hong-ou-mandel效应和状态重新分布与线性光倍数
Higher-dimensional Hong-Ou-Mandel effect and state redistribution with linear-optical multiports
论文作者
论文摘要
我们将两光量Hong-Ou-mandel（HOM）效应扩展到一组较高维的空间模式，并引入了一种效果，该效应允许使用方向无偏的线性光端口在这些模式上对量子状态进行可控的重新分布，而无需后选择。原始HOM效应仅允许光子对在太空中的两个方向上退出。但是，当伴随着光束拆分器和相位变速器时，结果是在四个空间模式下具有方向可控的两光子HOM效应，并通过更改系统中的相位来控制方向。这种可控的量子振幅操纵还可以通过在两个连接多层设备的系统中利用相位变速器来证明“延迟” HOM效应。通过这种方式，可以通过网络实现对两光子叠加态传播的空间和时间控制。
We expand the two-photon Hong-Ou-Mandel (HOM) effect onto a higher-dimensional set of spatial modes and introduce an effect that allows controllable redistribution of quantum states over these modes using directionally unbiased linear-optical four-ports without post-selection. The original HOM effect only allows photon pairs to exit in two directions in space. But when accompanied by beam splitters and phase shifters, the result is a directionally controllable two-photon HOM effect in four spatial modes, with direction controlled by changing the phases in the system. This controllable quantum amplitude manipulation also allows demonstration of a "delayed" HOM effect by exploiting phase shifters in a system of two connected multiport devices. By this means, both spatial and temporal control of the propagation of the two-photon superposition state through a network can be achieved.
