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Decoherence-free subspaces in quantum key distribution

Z. D. Walton, A. F. Abouraddy, A. V. Sergienko, B. E. A. Saleh, and M. C. Teich

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Abstract

We demonstrate that two recent innovations in the field of practical quantum key distribution (noise-immunity and passive detection) are closely related to the methods developed to protect quantum computations from decoherence. We present a new scheme that combines these advantages, and propose a practical implementation of this scheme that is feasible using existing technology.

© 2003 Optical Society of America

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