Decoherence-Free Subspaces in Quantum Key Distribution

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.

A few minor errors corrected; accepted for publication in PRL

References in corpus (2)

• Generation of Pulsed Polarization Entangled Two-Photon State via Temporal and Spectral Engineering
• One-Way Entangled-Photon Autocompensating Quantum Cryptography

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