Nanosecond-scale timing jitter in transition edge sensors at telecom and   visible wavelengths
  Transition edge sensors (TES) have the highest reported efficiencies (>98%) for detection of single photons in the visible and near infrared. Experiments in quantum information and foundations of physics that rely critically on this efficiency have started incorporating these detectors into con- ventional quantum optics setups. However, their range of applicability has been hindered by slow operation both in recovery time and timing jitter. We show here how a conventional tungsten-TES can be operated with jitter times of < 4 ns, well within the timing resolution necessary for MHz clocking of experiments, and providing an important practical simplification for experiments that rely on the simultaneous closing of both efficiency and locality loopholes. 
Antia Lamas-Linares, Brice Calkins, Nathan A. Tomlin, Thomas Gerrits,   Adriana E. Lita, Joern Beyer, Richard P. Mirin, and ...
quant-ph physics.ins-det