Generation and efficient measurement of single photons from fixed frequency superconducting qubits

  1. William F. Kindel,
  2. M. D. Schroer,
  3. and K. W. Lehnert
We demonstrate and evaluate an on-demand source of single itinerant microwave photons. Photons are generated using a highly coherent, fixed-frequency qubit-cavity system, and a protocol

Controlling a mechanical oscillator with a tunable coherent feedback network

  1. Joseph Kerckhoff,
  2. Reed W. Andrews,
  3. H. S. Ku,
  4. William F. Kindel,
  5. Katarina Cicak,
  6. Raymond W. Simmonds,
  7. and K. W. Lehnert
We demonstrate a fully cryogenic microwave feedback network composed of modular superconducting devices interconnected by transmission lines and designed to control a mechanical oscillator