ON states as resource units for universal quantum computation with photonic architectures

  title={ON states as resource units for universal quantum computation with photonic architectures},
  author={Krishna Kumar Sabapathy and Christian Weedbrook},
  journal={Physical Review A},
Universal quantum computation using photonic systems requires gates whose Hamiltonians are of order greater than quadratic in the quadrature operators. We first review previous proposals to implement such gates, where specific non-Gaussian states are used as resources in conjunction with entangling gates such as the continuous-variable versions of C-PHASE and C-NOT gates. We then propose ON states which are superpositions of the vacuum and the $N^{th}$ Fock state, for use as non-Gaussian… 

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