Tunneling induced dark states and the controllable resonance fluorescence spectrum in quantum dot molecules

Tunneling induced dark states and the controllable resonance fluorescence spectrum in quantum dot molecules
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量子点分子中隧道诱导暗态和可控共振荧光光谱

DOI:
10.1088/0953-4075/47/15/155503
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发表时间:
2013-11
影响因子:
1.6
通讯作者:
Liu, Yun
Liu, Yun
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Tong, Cun-Zhu;Ning, Yong-Qiang;Qin, Li;Liu, Yun

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光谱学是探测和操纵量子点的有力工具,利用原子物理方法研究了隧道效应控制的线性三重量子点分子的共振荧光光谱。有趣的功能,如淬灭和缩小的荧光观察。在这样的分子中,量子点之间的隧穿也可以诱导暗态。利用激光与隧穿耦合产生的修饰态的跃迁性质解释了这一结果。与原子系统不同,在这样的量子点分子中,量子相干性可以使用隧穿来诱导,不需要耦合激光器,这将允许隧穿可控量子点分子应用于量子光学和光子学。
Optical spectroscopy, a powerful tool for probing and manipulating quantum dots (QDs), has been used to investigate the resonance fluorescence spectrum from linear triple quantum dot molecules controlled by tunneling, using atomic physics methods. Interesting features such as quenching and narrowing of the fluorescence are observed. In such molecules the tunneling between the quantum dots can also induce a dark state. The results are explained by the transition properties of the dressed states generated by the coupling of the laser and the tunneling. Unlike the atomic system, in such quantum dot molecules quantum coherence can be induced using tunneling, requiring no coupling lasers, which will allow tunneling controllable quantum dot molecules to be applied to quantum optics and photonics.
DOI: 10.1103/physrevlett.62.2813
发表时间: 1989-06
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