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arXiv · 1901.09478

Efficient High-dimensional Quantum Key Distribution with Hybrid Encoding

Yonggi Jo·Hee Su Park·Seung-Woo Lee·Wonmin Son
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Abstract

We propose a schematic setup of quantum key distribution (QKD) with an improved secret key rate based on high-dimensional quantum states. Two degrees-of-freedom of a single photon, orbital angular momentum modes, and multi-path modes, are used to encode secret key information. Its practical implementation consists of optical elements that are within the reach of current technologies such as a multiport interferometer. We show that the proposed feasible protocol has improved the secret key rate with much sophistication compared to the previous 2-dimensional protocol known as the detector-device-independent QKD.

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Yonggi Jo, Hee Su Park, Seung-Woo Lee, Wonmin Son. 2019-01-28. Efficient High-dimensional Quantum Key Distribution with Hybrid Encoding. https://doi.org/10.3390/e21010080

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