High fidelity quantum gates via dynamical decoupling

Details High fidelity quantum gates via dynamical decoupling High fidelity quantum gates via dynamical decoupling

2010-12-15

arxiv.org/abs/1012.3433v1

Phys. Rev. Lett. 105, 230503 (2010)

Physics

Quantum Physics

Slightly expanded form of the journal version. Also includes the supplementary material as an appendix

Scientific paper

10.1103/PhysRevLett.105.230503

Realizing the theoretical promise of quantum computers will require overcoming decoherence. Here we demonstrate numerically that high fidelity quantum gates are possible within a framework of quantum dynamical decoupling. Orders of magnitude improvement in the fidelities of a universal set of quantum gates, relative to unprotected evolution, is achieved over a broad range of system-environment coupling strengths, using recursively constructed (concatenated) dynamical decoupling pulse sequences.

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