Coupling superconducting qubits via a cavity bus

  title={Coupling superconducting qubits via a cavity bus},
  author={Johannes Majer and Jerry M. Chow and Jay M. Gambetta and Jens Koch and Blake R. Johnson and J. A. Schreier and Luigi Frunzio and David I. Schuster and Andrew A. Houck and Andreas Wallraff and Alexandre Blais and Michel H. Devoret and Steven M. Girvin and Robert J. Schoelkopf},
Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single-qubit operations are now routine, and several examples of two-qubit interactions and gates have been demonstrated. These experiments show that two nearby qubits can be readily coupled with local interactions. Performing gate operations between an arbitrary pair of distant qubits is highly desirable for any quantum computer architecture, but has not yet been demonstrated. An… 
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