Optimal control-based states transfer for non-Markovian quantum system

被引：12
作者：
Ji Ying-Hua [1 ,2 ]
Hu Ju-Ju [1 ,2 ]
Huang Jian-Hua [1 ,2 ]
Ke Qiang [1 ,2 ]
机构：
[1] Jiangxi Normal Univ, Coll Phys & Commun Elect, Nanchang 330022, Jiangxi, Peoples R China
[2] Key Lab Photoelect & Telecommun Jiangxi Prov, Nanchang 330022, Jiangxi, Peoples R China
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2016年 / 81卷
基金：
中国国家自然科学基金;
关键词：
Quantum optimal control; Non-Markovian open quantum systems; State transfer; Decoherence; DECOHERENCE;
D O I：
10.1016/j.physe.2016.02.050
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Utilizing the method of optimal control, we investigate the tactics of state transfer in the non-Markovian quantum system with phase relaxation and energy dissipative relaxation. The influence of Ohmic reservoir with Lorentz-Drude regularization is numerically studied. Owing to the decoherence and memory effects of non-Markovian channel, the purity of quantum state attenuates damply in the free evolution. The numerical simulations indicate that arbitrary state transfer for non-Markovian system can be realized under the optimal control function by a proper external control field with a success rate of more than 98 percent. When the right control field and function is implemented, not only the decoherence is compensated completely but also the purity of quantum states are maintained in the process of state transfer. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：77 / 82
页数：6
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