title: Strong magnetic coupling of an ultracold gas to a superconducting waveguide cavity.
abstract: Placing an ensemble of 10;{6} ultracold atoms in the near field of a superconducting coplanar waveguide resonator with a quality factor Q approximately 10;{6}, one can achieve strong coupling between a single microwave photon in the coplanar waveguide resonator and a collective hyperfine qubit state in the ensemble with g_{eff}/2pi approximately 40 kHz larger than the cavity linewidth of kappa/2pi approximately 7 kHz. Integrated on an atomchip, such a system constitutes a hybrid quantum device, which also can be used to interconnect solid-state and atomic qubits, study and control atomic motion via the microwave field, observe microwave superradiance, build an integrated micromaser, or even cool the resonator field via the atoms.
authors: Atominstitut der Osterreichischen Universitäten, TU-Wien, 1020 Vienna, Austria.
authors: J
authors: J
authors: Verdú
authors: H
authors: H
authors: Zoubi
authors: Ch
authors: Ch
authors: Koller
authors: J
authors: J
authors: Majer
authors: H
authors: H
authors: Ritsch
authors: J
authors: J
authors: Schmiedmayer