Rapid incoherent control of quantum systems based on continuous measurements and reference model

doi:10.1049/iet-cta:20080047

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	Rapid incoherent control of quantum systems based on continuous measurements and reference model
	Dong, D.1,2; Lam, J.3; Tarn, T. J.4
	2009-02-01
发表期刊	IET CONTROL THEORY AND APPLICATIONS
ISSN	1751-8644
卷号	3 期号:2 页码:161-169
摘要	A rapid incoherent control scheme is proposed for driving a quantum system from an initial mixed state to a final state having a high fidelity with a target pure state. This scheme consists of two main steps: rapid purification of the initial mixed state and time-optimal control of the conditional state. The first step rapidly purifies the initial mixed state into an almost-pure state (conditional state) through continuous measurements and feedback control. The second step finds a set of suitable time-optimal controls through the control design of a reference model to drive the quantum system from the conditional state to the final state. The switching time between the two steps is determined by the expected purity or fidelity and the resultant state is an almost-pure state having a high fidelity with the target pure state. As an illustrative example, the authors apply the present rapid incoherent control scheme to a spin system. The potential applications of model predictive control to quantum systems are also discussed briefly.
DOI	10.1049/iet-cta:20080047
语种	英语
资助项目	National Natural Science Foundation of China[60703083] ; K. C. Wong Education Foundation (Hong Kong) ; China Postdoctoral Science Foundation[20060400515] ; U. S. Army Research Office[W911NF-04-1-0386]
WOS研究方向	Automation & Control Systems ; Engineering ; Instruments & Instrumentation
WOS类目	Automation & Control Systems ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS记录号	WOS:000263904900001
出版者	INST ENGINEERING TECHNOLOGY-IET
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/8302
专题	中国科学院数学与系统科学研究院
通讯作者	Dong, D.
作者单位	1.Chinese Acad Sci, Key Lab Syst & Control, Inst Syst Sci, AMSS, Beijing 100080, Peoples R China 2.Zhejiang Univ, Inst Cyber Syst & Control, Natl Lab Ind Control Technol, Hangzhou 310027, Peoples R China 3.Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China 4.Washington Univ, Dept Elect & Syst Engn, St Louis, MO 63130 USA
推荐引用方式 GB/T 7714	Dong, D.,Lam, J.,Tarn, T. J.. Rapid incoherent control of quantum systems based on continuous measurements and reference model[J]. IET CONTROL THEORY AND APPLICATIONS,2009,3(2):161-169.
APA	Dong, D.,Lam, J.,&Tarn, T. J..(2009).Rapid incoherent control of quantum systems based on continuous measurements and reference model.IET CONTROL THEORY AND APPLICATIONS,3(2),161-169.
MLA	Dong, D.,et al."Rapid incoherent control of quantum systems based on continuous measurements and reference model".IET CONTROL THEORY AND APPLICATIONS 3.2(2009):161-169.