Robust two-qubit quantum registers
强关联电子
2009-11-10 v2 量子物理
摘要
We carry out a systematic analysis of a pair of coupled qubits, each of which is subject to its own dissipative environment, and argue that a combination of the inter-qubit couplings which provides for the lowest possible decoherence rates corresponds to the incidence of a double spectral degeneracy in the two-qubit system. We support this general argument by the results of of an evolutionary genetic algorithm which can also be used for optimizing time-dependent processes (gates) and their sequences that implement various quantum computing protocols.
引用
@article{arxiv.cond-mat/0312349,
title = {Robust two-qubit quantum registers},
author = {I. A. Grigorenko and D. V. Khveshchenko},
journal= {arXiv preprint arXiv:cond-mat/0312349},
year = {2009}
}
备注
Latex, 4 pages, 4 figures, colored figures, accepted for publishing in PRL