Abstract

The dynamics of coherently driven exciton dressing with phonons in a single semiconductor quantum dot is investigated theoretically in terms of the perturbation treatment based on a unitary transformation. The decoherence rate of the exciton is obtained analytically. The results show that the decoherence due to phonons strongly depends on the exciton–phonon coupling constant and the Rabi frequency of the coherently driving field and is a typical non-Markovian process.

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