中国物理B ›› 2008, Vol. 17 ›› Issue (6): 1979-1984.doi: 10.1088/1674-1056/17/6/008
董萍1, 章礼华2, 曹卓良3
Dong Ping(董萍)a), Zhang Li-Hua (章礼华)a)b), and Cao Zhuo-Liang (曹卓良)a)c)†
摘要: In this paper, a scheme for generating various multiatom entangled graph states via resonant interactions is proposed. We investigate the generation of various four-atom graph states first in the ideal case and then in the case in which the cavity decay and atomic spontaneous emission are taken into consideration in the process of interaction. More importantly, we improve the possible distortion of the graph states coming from cavity decay and atomic spontaneous emission by performing appropriate unitary transforms on atoms. The generation of multiatom entangled graph states is very important for constructing quantum one-way computer in a fault-tolerant manner. The resonant interaction time is very short, which is important in the sense of decoherence. Our scheme is easy and feasible within the reach of current experimental technology.
中图分类号: (Quantum state engineering and measurements)