Optimal dynamical decoupling in the presence of colored control noise
Quantum Physics
2016-10-19 v1
Abstract
An optimal dynamical decoupling of a quantum system coupled to a noisy environment must take into account also the imperfections of the control pulses. We present a new formalism which describes, in a closed-form expression, the evolution of the system, including the spectral function of both the environment and control noise. We show that by measuring these spectral functions, our expression can be used to optimize the decoupling pulse sequence. We demonstrate this approach with an ensemble of optically trapped ultra-cold Rubidium atoms, and use quantum process tomography to identify the effect of the environment and control noise. Our approach is applicable and important for any realistic implementation of quantum information processing.
Keywords
Cite
@article{arxiv.1303.2045,
title = {Optimal dynamical decoupling in the presence of colored control noise},
author = {Ido Almog and Gil Loewenthal and Jonathan Coslovsky and Yoav Sagi and Nir Davidson},
journal= {arXiv preprint arXiv:1303.2045},
year = {2016}
}