A special version of a cavity quantum electrodynamics system, namely one that is embedded within an electronic circuit has been constructed. A superconducting quantum bit interacts with photons from a microwave transmission line. A novel regime can be obtained with this system, namely the strong dispersive limit, where a single photon has a large effect on the qubit without ever being absorbed.
- D. I. Schuster
- A. A. Houck
- R. J. Schoelkopf