识别对量子计算具有普适性的量子多体系统相
量子物理
2009-07-16 v3 强关联电子
摘要
量子计算可以仅通过对适当的量子态(例如相互作用多体系统的基态)进行单量子比特测量来实现。我们研究了一种基于簇态模型(cluster-state model)的简单自旋晶格系统,并通过使用量化远距离量子比特间执行的量子门保真度的非局域关联函数,证明了该系统存在一个量子(零温)相变,即从无序相转变为有序的“簇相”(cluster phase),在后者中可以实现一套普适的量子门。
引用
@article{arxiv.0802.4314,
title = {Identifying phases of quantum many-body systems that are universal for quantum computation},
author = {Andrew C. Doherty and Stephen D. Bartlett},
journal= {arXiv preprint arXiv:0802.4314},
year = {2009}
}
备注
5 pages, 2 figures, comments welcome; v2 has had many technical detailed removed, and gives a simplified presentation; v3 published version