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A Quantum Optics Argument for the #P-hardness of a Class of Multidimensional Integrals

Quantum Physics 2016-07-19 v1

Abstract

Matrix permanents arise naturally in the context of linear optical networks fed with nonclassical states of light. In this letter we tie the computational complexity of a class of multi-dimensional integrals to the permanents of large matrices using a simple quantum optics argument. In this way we prove that evaluating integrals in this class is \textbf{\#P}-hard. Our work provides a new approach for using methods from quantum physics to prove statements in computer science.

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Cite

@article{arxiv.1607.04960,
  title  = {A Quantum Optics Argument for the #P-hardness of a Class of Multidimensional Integrals},
  author = {Peter P. Rohde and Dominic W. Berry and Keith R. Motes and Jonathan P. Dowling},
  journal= {arXiv preprint arXiv:1607.04960},
  year   = {2016}
}

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6 pages