Photon-assisted-tunneling in a coupled double quantum dot under high microwave excitation powers

被引：26

作者：

Shang, Runan ^{[1
]}

Li, Hai-Ou ^{[1
]}

Cao, Gang ^{[1
]}

Xiao, Ming ^{[1
]}

Tu, Tao ^{[1
]}

Jiang, Hongwen ^{[2
]}

Guo, Guang-Can ^{[1
]}

Guo, Guo-Ping ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Key Lab Quantum Informat, Hefei 230026, Peoples R China

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 16期

关键词：

TRANSPORT; SPECTROSCOPY;

D O I：

10.1063/1.4824703

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We perform photon-assisted-tunneling (PAT) experiments on a GaAs double quantum dot device under high microwave excitation power. Photon-assisted absorption of up to 14 photons is observed, when electron temperature (>1 K) is far above the lattice temperature. Signatures of Landau-Zener-Stuckelberg interference are found even in this non-equilibrium PAT spectrum. In addition, the charge state relaxation time T-1 similar to 8ns measured in this out of thermal equilibrium double quantum dot is in agreement with other previous reports. (C) 2013 AIP Publishing LLC.

引用

页数：4

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