Higher-dimensional Hong-Ou-Mandel effect and state redistribution with linear-optical multiports
Abstract
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.
- Publication:
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Physical Review A
- Pub Date:
- December 2020
- DOI:
- arXiv:
- arXiv:2012.08745
- Bibcode:
- 2020PhRvA.102f3712O
- Keywords:
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- Quantum Physics
- E-Print:
- Phys. Rev. A 102, 063712 (2020)