Decoherence-Free Subspaces in Quantum Key Distribution
Zachary D. Walton, Ayman F. Abouraddy, Alexander V. Sergienko, Bahaa E. A. Saleh, Malvin C. Teich
Abstract
We demonstrate that two recent innovations in the field of practical quantum key distribution (one-way autocompensation 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.
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