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3 results

  • 3 - Quantum Money

  • Thomas Vidick, California Institute of Technology, USA, Stephanie Wehner, Delft University of Technology, The Netherlands
  • Book:
    Introduction to Quantum Cryptography
    Published online:
    10 October 2023
    Print publication:
    14 September 2023, pp 78-98

  • Summary

    One of the first applications of quantum information to cryptography to be discovered is to the creation of money that cannot be copied. Due to the no-cloning principle, which states that there is no procedure that can copy an arbitrary quantum state, we can hope to create perfectly secure money based on quantum information. In this chapter we study how this can be done by following Wiesner’s idea from the 1970s. To analyze the security of Wiesner’s scheme we develop a formalism for general quantum attacks by studying quantum channels, and encounter some limitations of Wiesner’s scheme.