Effect of disturbance in perfect state transfer  

作　　者：刘丹 张竞夫 

机构地区：[1]Key Laboratory for Quantum Information and Measurements, Department of Physics, Tsinghua University, Beijing 100084, China [2]Center for Quantum Information, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Physics B》2006年第2期272-275,共4页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China （Grant No 10374010）.Acknowledgement Liu Dan would like to thank Professor Long Gui- Lu of Tsinghua University for helpful discussions.

摘　　要：The influence of the disturbance caused by the imperfection of the engineering coupling constants in the perfect state transfer is calculated. The results show that the fidelity for the perfect state transfer is seriously affected by the errors occurring near the input and output spins. Such results are helpful for the realization of the perfect state transfer in the case where there exist errors in experiments.The influence of the disturbance caused by the imperfection of the engineering coupling constants in the perfect state transfer is calculated. The results show that the fidelity for the perfect state transfer is seriously affected by the errors occurring near the input and output spins. Such results are helpful for the realization of the perfect state transfer in the case where there exist errors in experiments.

关 键 词：XY-chain perfect state transfer DISTURBANCE 

分 类 号：O562[理学—原子与分子物理]