Decoherence-free subspaces in quantum key distribution.
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.
Walton
Zachary D
ZD
Quantum Imaging Laboratory, Department of Electrical & Computer Engineering, Boston University, 8 Saint Mary's Street, Boston, Massachusetts 02215-2421, USA.
Abouraddy
Ayman F
AF
Sergienko
Alexander V
AV
Saleh
Bahaa E A
BE
Teich
Malvin C
MC