Engineering a Kerr-Based Deterministic Cubic Phase Gate via Gaussian Operations.

  title={Engineering a Kerr-Based Deterministic Cubic Phase Gate via Gaussian Operations.},
  author={Ryotatsu Yanagimoto and Tatsuhiro Onodera and Edwin Ng and Logan G. Wright and Peter Leonard McMahon and Hideo Mabuchi},
  journal={Physical review letters},
  volume={124 24},
We propose a deterministic, measurement-free implementation of a cubic phase gate for continuous-variable quantum information processing. In our scheme, the applications of displacement and squeezing operations allow us to engineer the effective evolution of the quantum state propagating through an optical Kerr nonlinearity. Under appropriate conditions, we show that the input state evolves according to a cubic phase Hamiltonian, and we find that the cubic phase gate error decreases inverse… 

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