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Optimal decoherence control in non-Markovian open dissipative quantum systems

文献类型：期刊论文

作者Cui, Wei; Xi, Zai Rong; Pan, Yu
刊名PHYSICAL REVIEW A
出版日期2008-03-01
卷号77期号:3页码:11
ISSN号1050-2947
DOI10.1103/PhysRevA.77.032117
英文摘要We investigate the optimal control problem for a non-Markovian open, dissipative quantum system. Optimal control using the Pontryagin maximum principle is specifically derived. The influences of ohmic reservoir with Lorentz-Drude regularization are numerically studied in a two-level system under the following three conditions: omega(0)<>omega(c), where omega(0) is the characteristic frequency of the quantum system of interest, and omega(c) the cutoff frequency of the ohmic reservoir. The optimal control process shows its remarkable influences on the decoherence dynamics. The temperature is a key factor in the decoherence dynamics. We analyze the optimal decoherence control in high temperature, intermediate temperature, and low temperature reservoirs, respectively. It implies that designing some engineered reservoirs with the controlled coupling and state of the environment can slow down the decoherence rate and delay the decoherence time. Moreover, we compare the non-Markovian optimal decoherence control with the Markovian one and find that with non-Markovian the engineered artificial reservoirs are better than with the Markovian approximation in controlling the open, dissipative quantum system's decoherence.
WOS研究方向Optics ; Physics
语种英语
WOS记录号WOS:000254541100039
出版者AMER PHYSICAL SOC
源URL[http://ir.amss.ac.cn/handle/2S8OKBNM/5782]  
专题系统科学研究所
通讯作者Cui, Wei
作者单位Chinese Acad Sci, Acad Math & Syst Sci, Inst Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Cui, Wei,Xi, Zai Rong,Pan, Yu. Optimal decoherence control in non-Markovian open dissipative quantum systems[J]. PHYSICAL REVIEW A,2008,77(3):11.
APA Cui, Wei,Xi, Zai Rong,&Pan, Yu.(2008).Optimal decoherence control in non-Markovian open dissipative quantum systems.PHYSICAL REVIEW A,77(3),11.
MLA Cui, Wei,et al."Optimal decoherence control in non-Markovian open dissipative quantum systems".PHYSICAL REVIEW A 77.3(2008):11.

入库方式： OAI收割

来源：数学与系统科学研究院

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