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

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-Stückelberg (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.

12pages, 4figures

References in corpus (3)

• Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
• Coherence times of dressed states of a superconducting qubit under extreme driving
• Landau-Zener-Stuckelberg Interferometry of a Single Electron Charge Qubit

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• Photon exchange and entanglement formation during the transmission through a rectangular quantum barrier
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• Spin-valley resolved photon-assisted tunneling in carbon nanotube double quantum dots
• Observation of Kondo Effect in a Quadruple Quantum Dots