Practical high-dimensional quantum key distribution with decoy states
Name
PhysRevA.91.022336.pdf
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301.59 KB
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Adobe PDF
Checksum (MD5)
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Author(s)
Bunandar, Darius
Zhang, Zheshen
Shapiro, Jeffrey H.
Englund, Dirk Robert
Date Issued
February 2015
Journal
Physical Review A
Publisher
American Physical Society
Citation
Bunandar, Darius, Zheshen Zhang, Jeffrey H. Shapiro, and Dirk R. Englund. “Practical High-Dimensional Quantum Key Distribution with Decoy States.” Phys. Rev. A 91, no. 2 (February 2015). © 2015 American Physical Society
Version
Final published version
Abstract
High-dimensional quantum key distribution (HD-QKD) allows two parties to generate multiple secure bits of information per detected photon. In this work, we show that decoy-state protocols can be practically implemented for HD-QKD using only one or two decoy states. HD-QKD with two decoy states, under realistic experimental constraints, can generate multiple secure bits per coincidence at distances over 200 km and at rates similar to those achieved by a protocol with infinite decoy states. Furthermore, HD-QKD with only one decoy state is practical at short distances, where it is almost as secure as a protocol with two decoy states. HD-QKD with only one or two decoy states can therefore be implemented to optimize the rate of secure quantum communications.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevA.91.022336
