Boson sampling from a Gaussian state.

  title={Boson sampling from a Gaussian state.},
  author={Austin P. Lund and Anthony Laing and Saleh Rahimi-Keshari and Terry Rudolph and Jeremy Lloyd O'Brien and Timothy C. Ralph},
  journal={Physical review letters},
  volume={113 10},
We pose a randomized boson-sampling problem. Strong evidence exists that such a problem becomes intractable on a classical computer as a function of the number of bosons. We describe a quantum optical processor that can solve this problem efficiently based on a Gaussian input state, a linear optical network, and nonadaptive photon counting measurements. All the elements required to build such a processor currently exist. The demonstration of such a device would provide empirical evidence that… 

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