Topological protection and noiseless subsystems
Paolo Zanardi, Seth Lloyd · arXiv (Cornell University) · 2002
Encoding and manipulation of quantum information by means of topological degrees of freedom provides a promising way to achieve natural fault-tolerance that is built-in at the physical level. We show that this topological approach to quantum information processing is a particular instance of the notion of computation in a noiseless quantum subsystem. The latter then provide the most general conceptual framework for quantum-information stabilizing strategies