Error performance of intensity modulation-based quantum stream cipher by Yuen 2000 protocol with nonlinear pseudorandom number generator

Kentaro Kato

doi:10.1117/12.825798

26 August 2009 Error performance of intensity modulation-based quantum stream cipher by Yuen 2000 protocol with nonlinear pseudorandom number generator

Kentaro Kato

Author Affiliations +

Proceedings Volume 7465, Quantum Communications and Quantum Imaging VII; 74650A (2009) https://doi.org/10.1117/12.825798
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

This paper is concerned with the intensity modulation-based quantum stream cipher by Yuen 2000 protocol with a nonlinear pseudorandom number generator. First we show the minimum error probability of the basic model of the intensity modulation-based quantum stream cipher in cases of ciphertext-only attacks and known plaintext attack, by using the quantum signal detection theory. Second we propose the intensity modulation-based quantum stream cipher having a nonlinear pseudorandom number generator that is realized by the basis converter. We compare the error profile of the system having the nonlinear pseudorandom number generator with that of the basic model. As a result we will see that the use of the nonlinear pseudorandom number generator yields an advantage to the legitimate users.

Citation Download Citation

Kentaro Kato "Error performance of intensity modulation-based quantum stream cipher by Yuen 2000 protocol with nonlinear pseudorandom number generator", Proc. SPIE 7465, Quantum Communications and Quantum Imaging VII, 74650A (26 August 2009); https://doi.org/10.1117/12.825798

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