Finite-key analysis for time-energy high-dimensional quantum key distribution
Name
PhysRevA.94.052323.pdf
Size
250.67 KB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Furrer, Fabian
Niu, Murphy Yuezhen
Xu, Feihu
Shapiro, Jeffrey H
Date Issued
November 2016
Journal
Physical Review A
Publisher
American Physical Society
Citation
Niu, Murphy Yuezhen et al. “Finite-Key Analysis for Time-Energy High-Dimensional Quantum Key Distribution.” Physical Review A 94.5 (2016): n. pag. © 2016 American Physical Society.
Version
Final published version
Abstract
Time-energy high-dimensional quantum key distribution (HD-QKD) leverages the high-dimensional nature of time-energy entangled biphotons and the loss tolerance of single-photon detection to achieve long-distance key distribution with high photon information efficiency. To date, the general-attack security of HD-QKD has only been proven in the asymptotic regime, while HD-QKD's finite-key security has only been established for a limited set of attacks. Here we fill this gap by providing a rigorous HD-QKD security proof for general attacks in the finite-key regime. Our proof relies on an entropic uncertainty relation that we derive for time and conjugate-time measurements that use dispersive optics, and our analysis includes an efficient decoy-state protocol in its parameter estimation. We present numerically evaluated secret-key rates illustrating the feasibility of secure and composable HD-QKD over metropolitan-area distances when the system is subjected to the most powerful eavesdropping attack.
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
Terms of Use
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
https://doi.org/10.1103/PhysRevA.94.052323
