Catch and release of microwave photon states.

We demonstrate a superconducting resonator with variable coupling to a measurement transmission line. The resonator coupling can be adjusted through zero to a photon emission rate 1000 times the intrinsic resonator decay rate. We demonstrate the catch and release of photons in the resonator, as well as control of nonclassical Fock states. We also demonstrate the dynamical control of the release waveform of photons from the resonator, a key functionality that will enable high-fidelity quantum state transfer between distant resonators or qubits.

[1]  T. Duty,et al.  Tuning the field in a microwave resonator faster than the photon lifetime , 2008 .

[2]  Erik Lucero,et al.  Synthesizing arbitrary quantum states in a superconducting resonator , 2009, Nature.

[3]  H. Meyer,et al.  Controllable coupling of superconducting flux qubits. , 2006, Physical review letters.

[4]  P. Bertet,et al.  Tunable Resonators for Quantum Circuits , 2007, 0712.0221.

[5]  Alexander N. Korotkov,et al.  Flying microwave qubits with nearly perfect transfer efficiency , 2011, 1103.0592.

[6]  R. Rosenfeld.  Nature , 2009, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[7]  John Clarke,et al.  Solid-State Qubits with Current-Controlled Coupling , 2006, Science.

[8]  John M. Martinis,et al.  Superconducting phase qubits , 2009, Quantum Inf. Process..