Comment on "Resilience of gated avalanche photodiodes against bright   illumination attacks in quantum cryptography"
  This is a comment on the publication by Yuan et al. [Appl. Phys. Lett. 98, 231104 (2011); arXiv:1106.2675v1 [quant-ph]]. 
Lars Lydersen, Vadim Makarov and Johannes Skaar
quant-ph