Ultrafast Depopulation of a Quantum Dot by LA-phonon-assisted Stimulated Emission

Abstract

We demonstrate ultrafast incoherent depopulation of a quantum dot from above to below the transparency point using LA-phonon-assisted emission stimulated by a redshifted laser pulse. The QD is turned from a weakly vibronic system into a strongly vibronic one by laser driving which enables the phonon-assisted relaxation between the excitonic components of two dressed states. The depopulation is achieved within a laser pulse-width-limited time of 20 ps and exhibits a broad tuning range of a few meV. Our experimental results are well reproduced by path-integral calculations.

5 pages, 4 figures, presented in FOPS2015, EQEP2015, and MSS-17

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Cited by in corpus (9)

• Tailoring solid-state single-photon sources with stimulated emissions
• Highly indistinguishable single photons from incoherently and coherently excited GaAs quantum dots
• Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide
• Path integral description of combined Hamiltonian and non-Hamiltonian dynamics in quantum dissipative system
• Phonon impact on optical control schemes of quantum dots: The role of quantum dot geometry and symmetry
• Light Scattering from Solid-State Quantum Emitters: Beyond the Atomic Picture
• Dynamic vibronic coupling in InGaAs quantum dots
• Phonon-assisted dark exciton preparation in a quantum dot
• Engineering Photon Delocalization in a Rabi Dimer with a Dissipative Bath