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arXiv · 2104.11921

Non-reciprocity and quantum correlations of light transport in hot atoms via reservoir engineering

Xingda Lu·Wanxia Cao·Wei Yi·Heng Shen·Yanhong Xiao
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Abstract

The breaking of reciprocity is a topic of great interest in fundamental physics and optical information processing applications. We demonstrate non-reciprocal light transport in a quantum system of hot atoms by engineering the dissipative atomic reservoir. Our scheme is based on the phase-sensitive light transport in a multi-channel photon-atom interaction configuration, where the phase of collective atomic excitations is tunable through external driving fields. Remarkably, we observe inter-channel quantum correlations which originate from interactions with the judiciously engineered reservoir. The non-reciprocal transport in a quantum optical atomic system constitutes a new paradigm for atom-based, non-reciprocal optics, and offers opportunities for quantum simulations with coupled optical channels.

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Xingda Lu, Wanxia Cao, Wei Yi, Heng Shen, Yanhong Xiao. 2021-04-24. Non-reciprocity and quantum correlations of light transport in hot atoms via reservoir engineering. https://doi.org/10.1103/physrevlett.126.223603

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