Optimal decoherence control in non-Markovian open dissipative quantum systems

doi:10.1103/PhysRevA.77.032117

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	Optimal decoherence control in non-Markovian open dissipative quantum systems
	Cui, Wei; Xi, Zai Rong; Pan, Yu
	2008-03-01
发表期刊	PHYSICAL REVIEW A
ISSN	1050-2947
卷号	77 期号:3 页码:11
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.
DOI	10.1103/PhysRevA.77.032117
语种	英语
WOS研究方向	Optics ; Physics
WOS类目	Optics ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000254541100039
出版者	AMER PHYSICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/5783
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.