Practical Quantum Cryptography with Ultra-High Encryption Rates

Abstract

The PI has developed a method to obtain reliable secret key rates for QKD with untrusted devices. The advantage of this method, as compared to the original approach, is that in principle it can be applied to arbitrary DIQKD scenarios, not only those based on specialized Bell inequalities. The only existing approach that can be applied to DIQKD with such generality is based on bounding the guessing probability Pg(A0|E) instead, which is generally not optimal. This method outperforms both of these approaches in some cases. Importantly, it gives good results in regimes with substantial noise, which are likely to be experimentally relevant. With this approach, one could now explore DIQKD implementations aimed at maximizing a different Bell expression (or maximizing the key rate directly) instead of CHSH.

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 2020
Accession Number
AD1108764

Entities

People

  • Ci W. Lim

Organizations

  • National University of Singapore

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Air Force Research Laboratories
  • Coding
  • Computer Programming
  • Cryptography
  • Digital Communications
  • Inequalities
  • Probability
  • Probability Distributions
  • Quantum Computers
  • Quantum Computing
  • Quantum Cryptography
  • Quantum Information
  • Quantum Information Science
  • Quantum Key Distribution
  • Quantum Mechanics
  • Quantum States
  • Quantum Theory
  • Random Variables
  • Ridges
  • Secure Communications
  • Universities

Fields of Study

  • Computer science

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Cybersecurity.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Cyber
  • Cyber - Cryptography
  • Quantum Computing
  • Quantum Science - Quantum Key Distribution