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
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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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