Two spin measurements in exchange interaction quantum computers
介观与纳米尺度物理
2007-05-23 v1 量子物理
摘要
We propose and analyse a method for single shot measurement of the total spin of a two electron system in a coupled quantum dot or donor impurity structure, which can be used for readout in a quantum computer. The spin can be inferred by observing spin dependent fluctuations of charge between the two sites, via a nearby electrometer. Realistic experimental parameters indicate that the fidelity of the measurement can be larger than 0.9999 with existing or near-future technology.
引用
@article{arxiv.cond-mat/0411581,
title = {Two spin measurements in exchange interaction quantum computers},
author = {S. D. Barrett and T. M. Stace},
journal= {arXiv preprint arXiv:cond-mat/0411581},
year = {2007}
}
备注
5 pages, 4 figures, comments welcome