On the quantum master equation under feedback control

CSpace > 系统科学研究所

	On the quantum master equation under feedback control
	QI Bo
	2009
发表期刊	Science in China. Series F: Information Sciences
ISSN	1009-2757
卷号	52 期号:11 页码:2133
摘要	The nature of the quantum trajectories,described by stochastic master equations,may be jump-like or diffusive,depending upon different measurement processes.There are many different unravelings corresponding to different types of stochastic master equations for a given master equation.In this paper,we study the relationship between the quantum stochastic master equations and the quantum master equations in the Markovian case under feedback control.We show that the corresponding unraveling no longer exists when we further consider feedback control besides measurement.It is due to the fact that the information gained by the measurement plays an important role in the control process.The master equation governing the evolution of ensemble average cannot be restored simply by eliminating the noise term unlike the case without a control term.By establishing a fundamental limit on performance of the master equation with feedback control,we demonstrate the differences between the stochastic master equation and the master equation via theoretical proof and simulation,and show the superiority of the stochastic master equation for feedback control.
语种	英语
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/8762
专题	系统科学研究所
作者单位	中国科学院数学与系统科学研究院
推荐引用方式 GB/T 7714	QI Bo. On the quantum master equation under feedback control[J]. Science in China. Series F: Information Sciences,2009,52(11):2133.
APA	QI Bo.(2009).On the quantum master equation under feedback control.Science in China. Series F: Information Sciences,52(11),2133.
MLA	QI Bo."On the quantum master equation under feedback control".Science in China. Series F: Information Sciences 52.11(2009):2133.