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TITLE Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding
KIAS AUTHORS Lee, Seung-Woo
JOURNAL ENTROPY, 2019
ARCHIVE arXiv:1901.09478
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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