Semiconductor-based emitters of pairwise photonic entanglement are a promising constituent of photonicquantum technologies. They are known for the ability to generate discrete photonic states on-demand with lowmultiphoton 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 hamperingtheir scalable application in quantum networks. In this paper, we investigate and adjust the intermittence of theneutral exciton emission in a GaAs/AlGaAs quantum dot under two-photon resonant excitation of the neutralbiexciton. We investigate the spectral and quantum optical response of the quantum dot emission to an additionalwavelength tunable gate laser, revealing blinking caused by the intrinsic Coulomb blockade due to charge captureprocesses. Our finding demonstrates that the emission quenching can be actively suppressed by controlling thebalance of free electrons and holes in the vicinity of the quantum dot and thereby significantly increasing thequantum efficiency by 30%. ©2022 American Physical Society