Topological Protection and Quantum Noiseless Subsystems

Details Topological Protection and Quantum Noiseless Subsystems Topological Protection and Quantum Noiseless Subsystems

2002-08-21

arxiv.org/abs/quant-ph/0208132v2

Phys. Rev. Lett 90, 067902 (2003)

Physics

Quantum Physics

4 Pages LaTeX. Published version

Scientific paper

10.1103/PhysRevLett.90.067902

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 stabilizing quantum information and for preserving quantum coherence in topological and geometric systems.

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