Geometric quantum gates robust against stochastic control errors

Details Geometric quantum gates robust against stochastic control errors Geometric quantum gates robust against stochastic control errors

2004-07-22

arxiv.org/abs/quant-ph/0407177v1

Phys. Rev. A 72, 020301 (2005) (Rapid Commun)

Physics

Quantum Physics

4 pagers

Scientific paper

10.1103/PhysRevA.72.020301

We analyze a scheme for quantum computation where quantum gates can be continuously changed from standard dynamic gates to purely geometric ones. These gates are enacted by controlling a set of parameters that are subject to unwanted stochastic fluctuations. This kind of noise results in a departure from the ideal case that can be quantified by a gate fidelity. We find that the maximum of this fidelity corresponds to quantum gates with a vanishing dynamical phase.

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