Generating spatially entangled itinerant photons with waveguide quantum electrodynamics

@article{Kannan2020GeneratingSE,
  title={Generating spatially entangled itinerant photons with waveguide quantum electrodynamics},
  author={Bharath Kannan and Daniel L. Campbell and F. Vasconcelos and Roni Winik and D. K. Kim and Morten Kjaergaard and Philip Krantz and A. Melville and Bethany M. Niedzielski and Jonilyn L. Yoder and T. P. Orlando and Simon Gustavsson and William D. Oliver},
  journal={Science Advances},
  year={2020},
  volume={6}
}
We experimentally demonstrate a new method of generating entangled itinerant photons using waveguide quantum electrodynamics. Realizing a fully connected network of quantum processors requires the ability to distribute quantum entanglement. For distant processing nodes, this can be achieved by generating, routing, and capturing spatially entangled itinerant photons. In this work, we demonstrate the deterministic generation of such photons using superconducting transmon qubits that are directly… 

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