Numerical simulation results are presented which suggest that a class of non-adiabatic rapid passage sweeps first realized experimentally in 1991 should be capable of implementing a set of quantum gates that is universal for one-qubit unitary operations and whose elements operate with error probabilities per operation P < 10^{-4}. The sweeps are non-composite and generate controllable quantum interference effects which allow the one-qubit gates produced to operate non-adiabatically while maintaining high accuracy. The simulations suggest that the one-qubit gates produced by these sweeps show promise as possible elements of a fault-tolerant scheme for quantum computing.
@article{arxiv.quant-ph/0610167,
title = {High Fidelity Single-Qubit Gates Using Non-adiabatic Rapid Passage},
author = {Ran Li and Melique Hoover and Frank Gaitan},
journal= {arXiv preprint arXiv:quant-ph/0610167},
year = {2007}
}
Comments
16 pages; further discussion added on quantum interferences and sweep parameter precision