Quantum measurement of an electron in a disordered potential: Delocalization versus measurement voltages

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	Quantum measurement of an electron in a disordered potential: Delocalization versus measurement voltages
	Hu XN ; Li XQ
刊名	physical review b
	2006
卷号	73 期号:3 页码:art.no.035320
关键词	DOT DIFFUSION DETECTOR
ISSN号	1098-0121
通讯作者	hu, xn, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china.
中文摘要	quantum point contact (qpc), one of the typical mesoscopic transport devices, has been suggested to be an efficient detector for quantum measurement. in the context of two-state charge qubit, our previous studies showed that the qpc's measurement back-action cannot be described by the conventional lindblad quantum master equation. in this work, we study the measurement problem of a multistate system, say, an electron in disordered potential, subject to the quantum measurement of the mesoscopic detector qpc. the effect of measurement back-action and the detector's readout current are analyzed, where particular attention is focused on some new features and the underlying physics associated with the measurement-induced delocalization versus the measurement voltages.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-04-11
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/10862]
专题	半导体研究所_中国科学院半导体研究所（2009年前）
推荐引用方式 GB/T 7714	Hu XN,Li XQ. Quantum measurement of an electron in a disordered potential: Delocalization versus measurement voltages[J]. physical review b,2006,73(3):art.no.035320.
APA	Hu XN,&Li XQ.(2006).Quantum measurement of an electron in a disordered potential: Delocalization versus measurement voltages.physical review b,73(3),art.no.035320.
MLA	Hu XN,et al."Quantum measurement of an electron in a disordered potential: Delocalization versus measurement voltages".physical review b 73.3(2006):art.no.035320.