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	Operation of the qubit based on photon-assisted tunneling in a coupled quantum-dot system and the influence of dephasing
	Jiang, ZT; Peng, J; You, JQ; Zheng, HZ
刊名	Physical review b
	2002-04-15
卷号	65期号:15页码:4
ISSN号	1098-0121
DOI	10.1103/physrevb.65.153308
通讯作者	Jiang, zt()
英文摘要	We derive the generalized rate equation for the coupled quantum-dot (qd) system irradiated by a microwave field in the presence of a quantum point contact. it is shown that when a microwave field is tuned in resonance with the energy difference between the ground states of two qd's, the photon-assisted tunneling occurs and, as a result, the coupled qd system may be used as the single qubit. furthermore, we show that the oscillating current through the detector decays drastically as the dephasing rate increases, indicating clearly the influence of the dephasing effect induced by the quantum point contact used as a detecting device.
WOS关键词	ARTIFICIAL MOLECULE ; RATE-EQUATIONS ; TRANSPORT ; SPECTROSCOPY ; DETECTOR ; INTRADOT ; STATES
WOS研究方向	Physics
WOS类目	Physics, Condensed Matter
语种	英语
出版者	AMERICAN PHYSICAL SOC
WOS记录号	WOS:000175147100023
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2429186
专题	半导体研究所
通讯作者	Jiang, ZT
作者单位	Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Jiang, ZT,Peng, J,You, JQ,et al. Operation of the qubit based on photon-assisted tunneling in a coupled quantum-dot system and the influence of dephasing[J]. Physical review b,2002,65(15):4.
APA	Jiang, ZT,Peng, J,You, JQ,&Zheng, HZ.(2002).Operation of the qubit based on photon-assisted tunneling in a coupled quantum-dot system and the influence of dephasing.Physical review b,65(15),4.
MLA	Jiang, ZT,et al."Operation of the qubit based on photon-assisted tunneling in a coupled quantum-dot system and the influence of dephasing".Physical review b 65.15(2002):4.

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