Single photons from semiconductor quantum dots are promising resources for linear optical quantum computing, or, when coupled to spin states, quantum repeaters. To realize such schemes, the photons must exhibit a high degree of indistinguishability. However, the solid-state environment presents inherent obstacles for this requirement as intrinsic semiconductor fluctuations can destroy the photon indistinguishability. Here we use resonance fluorescence to generate indistinguishable photons from a single quantum dot in an environment filled with many charge-fluctuating traps. Over long time-scales (>50μs), flickering of the emission due to significant spectral fluctuations reduce the count rates. Nevertheless, due to the specificity of resonance fluorescence, high-visibility two-photon interference is achieved.
@article{arxiv.1612.04427,
title = {Generating indistinguishable photons from a quantum dot in a noisy environment},
author = {Ted S. Santana and Yong Ma and Ralph N. E. Malein and Faebian Bastiman and Edmund Clarke and Brian D. Gerardot},
journal= {arXiv preprint arXiv:1612.04427},
year = {2017}
}