Semiconductor-based emitters of pairwise photonic entanglement are a promising constituent of photonic
quantum technologies. They are known for the ability to generate discrete photonic states on-demand with low
multiphoton emission, near-unity entanglement fidelity, and high single photon indistinguishability. However,
quantum dots typically suffer from luminescence blinking, lowering the efficiency of the source and hampering
their scalable application in quantum networks. In this paper, we investigate and adjust the intermittence of the
neutral exciton emission in a GaAs/AlGaAs quantum dot under two-photon resonant excitation of the neutral
biexciton. We investigate the spectral and quantum optical response of the quantum dot emission to an additional
wavelength tunable gate laser, revealing blinking caused by the intrinsic Coulomb blockade due to charge capture
processes. Our finding demonstrates that the emission quenching can be actively suppressed by controlling the
balance of free electrons and holes in the vicinity of the quantum dot and thereby significantly increasing the
quantum efficiency by 30%. ©2022 American Physical Society
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