Scalable solid-state quantum computation in decoherence-free subspaces with trapped ions

Details Scalable solid-state quantum computation in decoherence-free subspaces with trapped ions Scalable solid-state quantum computation in decoherence-free subspaces with trapped ions

2006-03-24

arxiv.org/abs/quant-ph/0603222v1

Physics

Quantum Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevA.74.032321

We propose a decoherence-free subspaces (DFS) scheme to realize scalable quantum computation with trapped ions. The spin-dependent Coulomb interaction is exploited, and the universal set of unconventional geometric quantum gates is achieved in encoded subspaces that are immune from decoherence by collective dephasing. The scalability of the scheme for the ion array system is demonstrated, either by an adiabatic way of switching on and off the interactions, or by a fast gate scheme with comprehensive DFS encoding and noise decoupling techniques.

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