Damping of coherent oscillations in a quantum dot photodiode |
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| Authors: | JM Villas-Bas Sergio E Ulloa Alexander O Govorov |
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| Institution: | aDepartment of Physics and Astronomy, and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701-2979, USA;bDepartamento de Física, Universidade Federal de São Carlos, 13565-905, São Carlos, São Paulo, Brazil |
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| Abstract: | In this letter, we develop a model to describe the Rabi oscillations observed in a quantum-dot photodiode. Using a multi-level density matrix formulation, which includes multi-exciton and single particle states, we show that the damping observed in recent experiments is the result of a non-resonant excitation from or to the continuum of the wetting layer states. |
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| Keywords: | Tunneling Quantum dots Rabi oscillation |
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