Single-photon detector in the microwave range

被引：99

作者：

Astafiev, O

Komiyama, S

Kutsuwa, T

Antonov, V

Kawaguchi, Y

Hirakawa, K

机构：

[1] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan

[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

[3] Japan Sci & Technol Corp, Kawaguchi, Saitama 3320012, Japan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 22期

关键词：

D O I：

10.1063/1.1482787

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

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收藏

页码：4250 / 4252

页数：3

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