2020/05/04 by H. Ollivier, S. E. Thomas, S. C. Wein +12 · 1 voice · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.126.063602
published as Phys. Rev. Lett. 126, 063602 (2021) · 9 pages, 5 figures
arxiv created 2020/05/04 · arxiv published 2020/05/04 · arxiv updated 2021/02/17
Hong-Ou-Mandel interference is a cornerstone of optical quantum technologies. We explore both theoretically and experimentally how the nature of unwanted multi-photon components of single photon sources affect the interference visibility. We apply our approach to quantum dot single photon sources in order to access the mean wavepacket overlap of the single-photon component - an important metric to understand the limitations of current sources. We find that the impact of multi-photon events has thus far been underestimated, and that the effect of pure dephasing is even milder than previously expected.