Coherent ultrafast measurement of time-bin encoded photons.

  title={Coherent ultrafast measurement of time-bin encoded photons.},
  author={John M. Donohue and Megan Agnew and Jonathan Lavoie and Kevin J. Resch},
  journal={Physical review letters},
  volume={111 15},
Time-bin encoding is a robust form of optical quantum information, especially for transmission in optical fibers. To readout the information, the separation of the time bins must be larger than the detector time resolution, typically on the order of nanoseconds for photon counters. In the present work, we demonstrate a technique using a nonlinear interaction between chirped entangled time-bin photons and shaped laser pulses to perform projective measurements on arbitrary time-bin states with… 

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