Holonomic quantum computation in decoherence-free subspaces
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We show how to realize, by means of non-abelian quantum holonomies, a set of universal quantum gates acting on decoherence-free subspaces and subsystems. In this manner we bring together the quantum coherence stabilization virtues of decoherence-free subspaces and the fault-tolerance of all-geometric holonomic control. We discuss the implementation of this scheme in the context of quantum information processing using trapped ions and quantum dots.
4 pages, no figures. v2: minor changes. To appear in PRL
4 pages, no figures. v2: minor changes. To appear in PRL