Two-photon self-Kerr nonlinearities for quantum computing and quantum optics

  title={Two-photon self-Kerr nonlinearities for quantum computing and quantum optics},
  author={Joshua Combes and Daniel Jost Brod},
  journal={Physical Review A},
The self-Kerr interaction is an optical nonlinearity that produces a phase shift proportional to the square of the number of photons in the field. At present, many proposals use nonlinearities to generate photon-photon interactions. For propagating fields these interactions result in undesirable features such as spectral correlation between the photons. Here we engineer a discrete network composed of cross-Kerr interaction regions to simulate a self-Kerr medium. The medium has effective long… 

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