Available control in dynamical decoupled quantum systems

CSpace > 系统科学研究所

	Available control in dynamical decoupled quantum systems
	Pan Yu; Xi Zairong; Cui Wei
	2012
发表期刊	Chinese Science Bulletin
ISSN	1001-6538
卷号	57 期号:18 页码:2228
摘要	Dynamical decoupling (DD) eliminates qubit-bath coupling by applying a sequence of instantaneous pulses. While qubit-bath couplings generally lead to qubit relaxation and dephasing, qubit-qubit couplings are often used to manipulate or control quantum states. We investigate the available control operations in two DD schemes, named periodic DD (PDD) and Uhrig DD (UDD), to see whether universal quantum computation can be realized in these decoupled systems. We find that universal control is possible using Heisenberg interaction in both periodically decoupled system and Uhrig decoupled system, and the available control operations under two kinds of DD sequences obey the same commutation relation. In the UDD case, we also derive a rough bound for control errors.
语种	英语
资助项目	[National Natural Science Foundation of China]
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/40049
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	Pan Yu,Xi Zairong,Cui Wei. Available control in dynamical decoupled quantum systems[J]. Chinese Science Bulletin,2012,57(18):2228.
APA	Pan Yu,Xi Zairong,&Cui Wei.(2012).Available control in dynamical decoupled quantum systems.Chinese Science Bulletin,57(18),2228.
MLA	Pan Yu,et al."Available control in dynamical decoupled quantum systems".Chinese Science Bulletin 57.18(2012):2228.