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arXiv · 2104.15014

Emulation of quantum measurements with mixtures of coherent states

A. Mikhalychev·Y. S. Teo·H. Jeong·A. Stefanov·D. Mogilevtsev
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Abstract

We propose a methodology to emulate quantum phenomena arising from any non-classical quantum state using only a finite set of mixtures of coherent states. This allows us to successfully reproduce well-known quantum effects using resources that can be much more feasibly generated in the laboratory. We present a simple procedure to experimentally carry out quantum-state emulation with coherent states, illustrate it emulating multi-photon NOON states with few phase-averaged coherent states, and demonstrate its capabilities in observing fundamental quantum-mechanical effects, such as the Hong-Ou-Mandel effect, violating Bell inequalities and witnessing quantum non-classicality.

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A. Mikhalychev, Y. S. Teo, H. Jeong, A. Stefanov, D. Mogilevtsev. 2021-04-30. Emulation of quantum measurements with mixtures of coherent states. https://doi.org/10.1103/physreva.105.052206

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