Randomization techniques for the intensity modulation-based quantum stream cipher and progress of experiment

Kentaro Kato; Osamu Hirota

doi:10.1117/12.893156

6 September 2011 Randomization techniques for the intensity modulation-based quantum stream cipher and progress of experiment

Kentaro Kato, Osamu Hirota

Author Affiliations +

Proceedings Volume 8163, Quantum Communications and Quantum Imaging IX; 81630A (2011) https://doi.org/10.1117/12.893156
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

The quantum noise based direct encryption protocol Y-OO is expected to provide physical complexity based security, which is thought to be comparable to information theoretic security in mathematical cryptography, for the. physical layer of fiber-optic communication systems. So far, several randomization techniques for the quantum stream cipher by Y-OO protocol have been proposed, but most of them were developed under the assumption that phase shift keying is used as the modulation format. On the other hand, the recent progress in the experimental study on the intensity modulation based quantum stream cipher by Y-OO protocol raises expectations for its realization. The purpose of this paper is to present design and implementation methods of a composite model of the intensity modulation based quantum stream cipher with some randomization techniques. As a result this paper gives a viewpoint of how the Y-OO cryptosystem is miniaturized.

Citation Download Citation

Kentaro Kato and Osamu Hirota "Randomization techniques for the intensity modulation-based quantum stream cipher and progress of experiment", Proc. SPIE 8163, Quantum Communications and Quantum Imaging IX, 81630A (6 September 2011); https://doi.org/10.1117/12.893156

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