Hybrid atom-photon quantum gate in a superconducting microwave resonator

J. D. Pritchard, J. A. Isaacs, M. A. Beck, R. McDermott, M. Saffman

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We propose a hybrid quantum gate between an atom and a microwave photon in a superconducting coplanar waveguide cavity by exploiting the strong resonant microwave coupling between adjacent Rydberg states. Using experimentally achievable parameters gate fidelities >0.99 are possible on submicrosecond time scales for waveguide temperatures below 40 mK. This provides a mechanism for generating entanglement between two disparate quantum systems and represents an important step in the creation of a hybrid quantum interface applicable for both quantum simulation and quantum information processing.

Original languageEnglish
Article number010301
Number of pages5
JournalPhysical Review A
Issue number1
Publication statusPublished - 16 Jan 2014


  • hybrid quantum gate
  • atoms
  • photons
  • microwave coupling
  • Rydberg states
  • hybrid quantum interface


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