Single-photon detector in the microwave range
Single-photon detector in the microwave range
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DOI：
10.1063/1.1482787
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发表时间：
2002-06-03
影响因子：
4
通讯作者：
Hirakawa, K
中科院分区：
文献类型：
--
作者：
Astafiev, O;Komiyama, S;Hirakawa, K
利用GaAs/AlxGa 1-xAs并联量子点电容耦合的单电子晶体管（SET）实现了500 GHz微波频率下的单光子计数。分离双量子点的点接触允许激发的电子从一个量子点迅速逃逸到另一个量子点。所产生的长寿命的QD的光致电离被检测为SET电流的变化。(C)2002年美国物理学会。
Single-photon counting at microwave frequencies around 500 GHz is demonstrated by using a single-electron transistor (SET) formed by two capacitively coupled GaAs/AlxGa1-xAs parallel quantum dots (QDs). A point contact separating the double QDs allows the prompt escape of an excited electron from one of the QDs to another. The resulting long-lived photoinduced ionization of the QD is detected as a change in the SET current. (C) 2002 American Institute of Physics.