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arXiv · 1803.05626

Quantum memory and gates using a Lambda-type quantum emitter coupled to a chiral waveguide

Tao Li·Adam Miranowicz·Xuedong Hu·Keyu Xia·Franco Nori
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Abstract

By coupling a $\Lambda$-type quantum emitter to a chiral waveguide, in which the polarization of a photon is locked to its propagation direction, we propose a controllable photon-emitter interface for quantum networks. We show that this chiral system enables the SWAP gate and a hybrid-entangling gate between the emitter and a flying single photon. It also allows deterministic storage and retrieval of single-photon states with high fidelities and efficiencies. In short, this chirally coupled emitter-photon interface can be a critical building block toward a large-scale quantum network.

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Tao Li, Adam Miranowicz, Xuedong Hu, Keyu Xia, Franco Nori. 2018-03-15. Quantum memory and gates using a Lambda-type quantum emitter coupled to a chiral waveguide. https://doi.org/10.1103/physreva.97.062318

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