Qubit decoherence by low-frequency noise
超导电性
2009-11-10 v1
摘要
We have derived explicit non-perturbative expression for decoherence of quantum oscillations in a qubit by low-frequency noise. Decoherence strength is controlled by the noise spectral density at zero frequency while the noise correlation time determines the time of crossover from the to the exponential suppression of coherence. We also performed Monte Carlo simulations of qubit dynamics with noise which agree with the analytical results and show that most of the conclusions are valid for both Gaussian and non-Gaussian noise.
引用
@article{arxiv.cond-mat/0401519,
title = {Qubit decoherence by low-frequency noise},
author = {K. Rabenstein and V. A. Sverdlov and D. V. Averin},
journal= {arXiv preprint arXiv:cond-mat/0401519},
year = {2009}
}
备注
4 pages, 2 figures