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Title: Scalable high-rate, high-dimensional time-bin encoding quantum key distribution

Abstract

We propose and experimentally demonstrate a new scheme for measuring high-dimensional phase states using a two-photon interference technique, which we refer to as quantum-controlled measurement. Using this scheme, we implement a d-dimensional time-phase quantum key distribution (QKD) system and achieve secret key rates of 5.26 and 8.65 Mbps using d = 2 and d = 8 quantum states, respectively, for a 4 dB channel loss, illustrating that high-dimensional time-phase QKD protocols are advantageous for low-loss quantum channels. Here, this work paves the way for practical high-dimensional QKD protocols for metropolitan-scale systems. Furthermore, our results apply equally well for other high-dimensional protocols, such as those using the spatial degree-of-freedom with orbital angular momentum states being one example.

Authors:
ORCiD logo [1];  [2];  [3]; ORCiD logo [4];  [5];  [6]
  1. The Ohio State Univ., Columbus, OH (United States); Duke Univ., Durham, NC (United States)
  2. National Univ. of Singapore (Singapore)
  3. Duke Univ., Durham, NC (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Duke Univ., Durham, NC (United States); IonQ, Inc., College Park, MD (United States)
  6. The Ohio State Univ., Columbus, OH (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1526373
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Quantum Science and Technology
Additional Journal Information:
Journal Volume: 4; Journal Issue: 3; Journal ID: ISSN 2058-9565
Publisher:
IOPscience
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; quantum communication; quantum key distribution; two-photon interference; high-dimensional QKD

Citation Formats

Islam, Nurul T., Lim, Charles Ci Wen, Cahall, Clinton, Qi, Bing, Kim, Jungsang, and Gauthier, Daniel J. Scalable high-rate, high-dimensional time-bin encoding quantum key distribution. United States: N. p., 2019. Web. doi:10.1088/2058-9565/ab21a4.
Islam, Nurul T., Lim, Charles Ci Wen, Cahall, Clinton, Qi, Bing, Kim, Jungsang, & Gauthier, Daniel J. Scalable high-rate, high-dimensional time-bin encoding quantum key distribution. United States. doi:https://doi.org/10.1088/2058-9565/ab21a4
Islam, Nurul T., Lim, Charles Ci Wen, Cahall, Clinton, Qi, Bing, Kim, Jungsang, and Gauthier, Daniel J. Tue . "Scalable high-rate, high-dimensional time-bin encoding quantum key distribution". United States. doi:https://doi.org/10.1088/2058-9565/ab21a4. https://www.osti.gov/servlets/purl/1526373.
@article{osti_1526373,
title = {Scalable high-rate, high-dimensional time-bin encoding quantum key distribution},
author = {Islam, Nurul T. and Lim, Charles Ci Wen and Cahall, Clinton and Qi, Bing and Kim, Jungsang and Gauthier, Daniel J.},
abstractNote = {We propose and experimentally demonstrate a new scheme for measuring high-dimensional phase states using a two-photon interference technique, which we refer to as quantum-controlled measurement. Using this scheme, we implement a d-dimensional time-phase quantum key distribution (QKD) system and achieve secret key rates of 5.26 and 8.65 Mbps using d = 2 and d = 8 quantum states, respectively, for a 4 dB channel loss, illustrating that high-dimensional time-phase QKD protocols are advantageous for low-loss quantum channels. Here, this work paves the way for practical high-dimensional QKD protocols for metropolitan-scale systems. Furthermore, our results apply equally well for other high-dimensional protocols, such as those using the spatial degree-of-freedom with orbital angular momentum states being one example.},
doi = {10.1088/2058-9565/ab21a4},
journal = {Quantum Science and Technology},
number = 3,
volume = 4,
place = {United States},
year = {2019},
month = {6}
}

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