Surface Acoustic Wave induced Transport in a Double Quantum Dot

Abstract

We report on non-adiabatic transport through a double quantum dot under irradiation of surface acoustic waves generated on-chip. At low excitation powers, absorption and emission of single and multiple phonons is observed. At higher power, sequential phonon assisted tunneling processes excite the double dot in a highly non-equilibrium state. The present system is attractive for studying electron-phonon interaction with piezoelectric coupling.

4 pages, 3 figures

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• Electron transport through double quantum dots
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• Time-dependent resonant tunneling via two discrete states
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• Spontaneous emission of phonons by coupled quantum dots
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