Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding
1
Department of Physics, Sogang University, Seoul 04107, Korea
2
Research Institute for Basic Science, Sogang University, Seoul 04107, Korea
3
Korea Research Institute of Standards and Science, Daejeon 34113, Korea
4
Quantum Universe Center, Korea Institute for Advanced Study, Seoul 02455, Korea
*
Author to whom correspondence should be addressed.
Entropy 2019, 21(1), 80; https://doi.org/10.3390/e21010080
Received: 26 December 2018
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Revised: 11 January 2019
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Accepted: 14 January 2019
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Published: 17 January 2019
(This article belongs to the Special Issue Entropic Uncertainty Relations and Their Applications)
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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MDPI and ACS Style
Jo, Y.; Park, H.S.; Lee, S.-W.; Son, W. Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding. Entropy 2019, 21, 80. https://doi.org/10.3390/e21010080
AMA Style
Jo Y, Park HS, Lee S-W, Son W. Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding. Entropy. 2019; 21(1):80. https://doi.org/10.3390/e21010080
Chicago/Turabian StyleJo, Yonggi, Hee Su Park, Seung-Woo Lee, and Wonmin Son. 2019. "Efficient High-Dimensional Quantum Key Distribution with Hybrid Encoding" Entropy 21, no. 1: 80. https://doi.org/10.3390/e21010080
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