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Effect of photogenerated carriers on the spectral diffusion of a quantum dot coupled to a photonic crystal cavity
2011
Physical Review B
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We experimentally observe the effect of photo-generated carriers on the spectral diffusion of a quantum dot (QD) coupled to a photonic crystal (PC) cavity. In this system, spectral diffusion arises in part from charge fluctuations on the etched surfaces of the PC. We find that these fluctuations may be suppressed by photo-generated carriers, leading to a reduction of the measured QD linewidth by a factor of ~2 compared to the case where the photo-generated carriers are not present. This result
doi:10.1103/physrevb.84.195304
fatcat:ijpgntlydfaovi4qmnc4eff3ia