Driving-dependent damping of Rabi oscillations in two-level semiconductor systems

Abstract

We propose a mechanism to explain the nature of the damping of Rabi oscillations with increasing driving-pulse area in localized semiconductor systems, and have suggested a general approach which describes a coherently driven two-level system interacting with a dephasing reservoir. Present calculations show that the non-Markovian character of the reservoir leads to the dependence of the dephasing rate on the driving-field intensity, as observed experimentally. Moreover, we have shown that the damping of Rabi oscillations might occur as a result of different dephasing mechanisms for both stationary and non-stationary effects due to coupling to the environment. Present calculated results are found in quite good agreement with available experimental measurements.

References in corpus (4)

• Stochastic wave function method for non-Markovian quantum master equations
• Unconventional motional narrowing in the optical spectrum of a semiconductor quantum dot
• Decoherence of Rabi oscillations in a single quantum dot
• Decoherence processes during active manipulation of excitonic qubits in semiconductor quantum dots

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