Controllable dissipation of a qubit coupled to an engineering reservoir

doi:10.1103/PhysRevA.98.062106

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	Controllable dissipation of a qubit coupled to an engineering reservoir
	Shen, HZ ; Xu, S ; Yi, S2,3 ; Yi, XX
刊名	PHYSICAL REVIEW A
	2018
卷号	98 期号:6 页码:62106
关键词	SPONTANEOUS-EMISSION QUANTUM DYNAMICS TRANSITION GAS
ISSN号	2469-9926
DOI	10.1103/PhysRevA.98.062106
英文摘要	The dynamics and non-Markovianity of an atomic impurity qubit (AIQ) immersed in a structured environment is explored where the AIQ is driven by a two-dimensional field and the environment is a quasi-two-dimensional dipolar Bose-Einstein condensate (dBEC). We derive a non-Markovian master equation for the AIQ with initial correlation between the qubit and the dBEC, which contains all the influences of the non-Markovian environment on the atomic impurity qubit. Analyzing the spectrum density for the AIQ-dBEC coupled system and solving the dynamics of the qubit, we find that the atomic impurity qubit can be partially stabilized in its excited state by controlling the x-direction field with the y-direction field fixed. Our analysis reveals that it is the formation of the system-environment bound state that results in such a suppressed dissipation. The present paper is helpful for understanding the effect of the structured and modulated environment and enriches the dynamics of an open system.
学科主题	Optics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/22767]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Sch Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China 3.Shen, H. Z.; Yi, X. X.] Northeast Normal Univ, Minist Educ, Ctr Adv Optoelect Funct Mat Res, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Jilin, Peoples R China 4.[Shen, H. Z.; Xu, Shuang; Yi, X. X.] Northeast Normal Univ, Ctr Quantum Sci & Sch Phys, Changchun 130024, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Shen, HZ,Xu, S,Yi, S,et al. Controllable dissipation of a qubit coupled to an engineering reservoir[J]. PHYSICAL REVIEW A,2018,98(6):62106.
APA	Shen, HZ,Xu, S,Yi, S,&Yi, XX.(2018).Controllable dissipation of a qubit coupled to an engineering reservoir.PHYSICAL REVIEW A,98(6),62106.
MLA	Shen, HZ,et al."Controllable dissipation of a qubit coupled to an engineering reservoir".PHYSICAL REVIEW A 98.6(2018):62106.