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arXiv · 1308.3747

Photon-assisted-tunneling in a coupled double quantum dot out of thermal equilibrium

Runan Shang·Haiou Li·Gang Cao·Ming Xiao·Tao Tu·Guang-Can Guo·Hong-Wen Jiang·Guo-Ping Guo
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Abstract

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 (>1K) are far above the lattice temperature. Signatures of Landau-Zener-St\"uckelberg (LZS) interference are found even in this non-equilibrium PAT spectrum. In addition, the charge state relaxation time T_1~8ns measured in this out of thermal equilibrium double quantum dot is in agreement with other previous reports.

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Runan Shang, Haiou Li, Gang Cao, Ming Xiao, Tao Tu, Guang-Can Guo, Hong-Wen Jiang, Guo-Ping Guo. 2013-08-17. Photon-assisted-tunneling in a coupled double quantum dot out of thermal equilibrium. https://doi.org/10.1063/1.4824703

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