Dynamically corrected gates for an exchange-only qubit
Mesoscale and Nanoscale Physics
2013-10-24 v2 Quantum Physics
Abstract
We provide analytical composite pulse sequences that perform dynamical decoupling concurrently with arbitrary rotations for a qubit coded in the spin state of a triple quantum dot. The sequences are designed to respect realistic experimental constraints such as strictly nonnegative couplings. Logical errors and leakage errors are simultaneously corrected. A short pulse sequence is presented to compensate nuclear noise and a longer sequence is presented to simultaneously compensate nuclear and charge noise. The capability developed in this work provides a clear prescription for combatting the relevant sources of noise that currently hinder exchange-only qubit experiments.
Cite
@article{arxiv.1303.6950,
title = {Dynamically corrected gates for an exchange-only qubit},
author = {G. T. Hickman and Xin Wang and J. P. Kestner and S. Das Sarma},
journal= {arXiv preprint arXiv:1303.6950},
year = {2013}
}
Comments
5 pages, 3 figures, + 5 pages supplemental information