Efficient classical simulation of continuous variable quantum information processes.

@article{Bartlett2002EfficientCS,
  title={Efficient classical simulation of continuous variable quantum information processes.},
  author={Stephen D. Bartlett and Barry C. Sanders and Samuel L. Braunstein and Kae Nemoto},
  journal={Physical review letters},
  year={2002},
  volume={88 9},
  pages={
          097904
        }
}
We obtain sufficient conditions for the efficient simulation of a continuous variable quantum algorithm or process on a classical computer. The resulting theorem is an extension of the Gottesman-Knill theorem to continuous variable quantum information. For a collection of harmonic oscillators, any quantum process that begins with unentangled Gaussian states, performs only transformations generated by Hamiltonians that are quadratic in the canonical operators, and involves only measurements of… 

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