2004/07/22 by Shi-Liang Zhu, Paolo Zanardi · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physreva.72.020301
published as Phys. Rev. A 72, 020301 (2005) (Rapid Commun) · 4 pagers
arxiv created 2004/07/22 · arxiv updated 2009/12/01
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.