Optimal dynamical decoupling sequence for the Ohmic spectrum

doi:10.1103/PhysRevA.81.022309

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	Optimal dynamical decoupling sequence for the Ohmic spectrum
	Pan, Yu 1,2; Xi, Zai-Rong1 ; Cui, Wei 1,2
	2010-02-01
发表期刊	PHYSICAL REVIEW A
ISSN	1050-2947
卷号	81 期号:2 页码:5
摘要	The optimal dynamical decoupling sequence for a qubit coupled to an Ohmic environment is investigated. By analytically computing the derivatives of the decoherence function, the optimal pulse locations are found to satisfy a set of nonlinear equations which can be easily solved. These equations incorporate the environment information such as the high-energy (UV) cutoff frequency omega(c), giving a complete description of the decoupling process. The solutions explain previous experimental and theoretical results of locally optimized dynamical decoupling sequence in high-frequency-dominated environment, which were obtained by purely numerical computation and experimental feedback. As shown in numerical comparison, these solutions outperform the Uhrig dynamical decoupling sequence by one or more orders of magnitude in the Ohmic case.
DOI	10.1103/PhysRevA.81.022309
语种	英语
资助项目	National Natural Science Foundation of China[60774099] ; National Natural Science Foundation of China[60821091] ; Chinese Academy of Sciences (CAS)[KJCX3-SYW-S01]
WOS研究方向	Optics ; Physics
WOS类目	Optics ; Physics, Atomic, Molecular & Chemical
WOS记录号	WOS:000275072500059
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/9836
专题	系统科学研究所
通讯作者	Pan, Yu
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, Inst Syst Sci, Key Lab Syst & Control, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Pan, Yu,Xi, Zai-Rong,Cui, Wei. Optimal dynamical decoupling sequence for the Ohmic spectrum[J]. PHYSICAL REVIEW A,2010,81(2):5.
APA	Pan, Yu,Xi, Zai-Rong,&Cui, Wei.(2010).Optimal dynamical decoupling sequence for the Ohmic spectrum.PHYSICAL REVIEW A,81(2),5.
MLA	Pan, Yu,et al."Optimal dynamical decoupling sequence for the Ohmic spectrum".PHYSICAL REVIEW A 81.2(2010):5.