Reply to Comment on 'Observation of Fourier transform limited lines in hexagonal boron nitride'

[摘要] In this Reply, we answer to the comments by Langbein [Phys. Rev. B 100, 047401 (2019)]. We disagree with the argument that our measured spectral shapes and the extracted linewidths are caused by temporal blinking. We give detailed information on our evaluation process to exclude blinking events. Beyond the question raised in the Comment, we analyze the influence of spectral diffusion. Although spectral diffusion is an ongoing limitation for defect centers in hexagonal boron nitride, we prove that it is not influencing our extracted linewidths.