Quantum state characterization of a fast tunable superconducting resonator

نویسندگان

  • Z. L. Wang
  • Y. P. Zhong
  • L. J. He
  • H. Wang
  • John M. Martinis
  • A. N. Cleland
  • Q. W. Xie
چکیده

We demonstrate a frequency-tunable superconducting coplanar waveguide resonator, with a tuning range of half a gigahertz and a switching time of 1 ns. The resonator is made tunable by inserting a superconducting quantum interference device in the center strip of the resonator. Quantum measurements are made by probing the resonator with a superconducting qubit, allowing us to use microwave photon Fock states to benchmark the resonator performance. Using the resonator, we shuttle energy quanta between the qubit and a microscopic two-level state. The tunable resonator can, therefore, serve as a communication bus or memory element in a prototype quantum processor. VC 2013 AIP Publishing LLC. [http://dx.doi.org/10.1063/1.4802893]

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تاریخ انتشار 2013