A STUDY OF THE QUANTUM DOT IN APPLICATION TO TERAHERTZ SINGLE PHOTON COUNTING

被引：0
|
作者：
Hashiba, H. [1 ]
Antonov, V. [1 ]
Kulik, L. [2 ]
Komiyama, S. [3 ]
机构：
[1] Univ London Royal Holloway & Bedford New Coll, Dept Phys, Egham TW20 0EX, England
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia
[3] Univ Tokyo, Dept Basic Sci, Tokyo 1538902, Japan
来源：
CONTROLLABLE QUANTUM STATES: MESOSCOPIC SUPERCONDUCTIVITY AND SPRINTRONICS | 2008年
关键词：
D O I：
10.1142/9789812814623_0033
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present an experimental study of a quantum dot for application to a single photon terahertz detector. A GaAs/AlGaAs quantum dot of similar to 1 micrometer size is defined by mesa patterning and metal gates. The charge polarization of the QD induced by the absorption of individual photons is detected by a metallic single electron transistor. We have investigated the operation of the QD at different rates of the external terahertz photon flux and at various temperatures. It was found that a state of the nearly isolated QD can potentially be used for counting individual terahertz photons. The operation of the detector is however strongly affected by the exact composition of the QD excitation states.
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页码：209 / +
页数：2
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