“School of Physic”

Back to Papers Home
Back to Papers of School of Physic

Paper   IPM / Physic / 14950
School of Physics
  Title:   Exact boson sampling using Gaussian continuous-variable measurements
  Author(s): 
1.  A. P. Lund
2.  S. Rahimi-Keshari
3.  T. C. Ralph
  Status:   Published
  Journal: Phys. Rev. A
  Vol.:  96
  Year:  2017
  Pages:   022301
  Supported by:  IPM
  Abstract:
Boson sampling is a quantum mechanical task involving Fock basis state preparation and detection and evolution using only linear interactions. A classical algorithm for producing samples from this quantum task cannot be efficient unless the polynomial hierarchy of complexity classes collapses, a situation believed to be highly implausible. We present a method for constructing a device which uses Fock state preparations, linear interactions, and Gaussian continuous-variable measurements for which one can show that exact sampling would be hard for a classical algorithm in the same way as boson sampling. The detection events used from this arrangement do not allow a similar conclusion to be drawn for the classical hardness of approximate sampling. We discuss the details of this result outlining some specific properties required by approximate sampling hardness.

Download TeX format
back to top
scroll left or right