Decoherence-free subspaces in quantum key distribution.

Phys Rev Lett

Quantum Imaging Laboratory, Department of Electrical & Computer Engineering, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215-2421, USA.

Published: August 2003

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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http://dx.doi.org/10.1103/PhysRevLett.91.087901DOI Listing

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