Geometric Phase Gates with Adiabatic Control in Electron Spin Resonance
Abstract
High-fidelity quantum operations are a key requirement for fault-tolerant quantum information processing. In electron spin resonance, manipulation of the quantum spin is usually achieved with time-dependent microwave fields. In contrast to the conventional dynamic approach, adiabatic geometric phase operations are expected to be less sensitive to certain kinds of noise and field inhomogeneities. Here, we investigate such phase gates applied to electron spins both through simulations and experiments, showing that the adiabatic geometric phase gate is indeed inherently robust against inhomogeneity in the applied microwave field strength. While only little advantage is offered over error-correcting composite pulses for modest inhomogeneities <=10%, the adiabatic approach reveals its potential for situations where field inhomogeneities are unavoidably large.
Cite
@article{arxiv.1208.0555,
title = {Geometric Phase Gates with Adiabatic Control in Electron Spin Resonance},
author = {Hua Wu and Erik M. Gauger and Richard E. George and Mikko Möttönen and Helge Riemann and Nikolai V. Abrosimov and Peter Becker and Hans-Joachim Pohl and Kohei M. Itoh and Mike L. W. Thewalt and John J. L. Morton},
journal= {arXiv preprint arXiv:1208.0555},
year = {2013}
}