Strong Magnetic Coupling of an Ultracold Gas to a Superconducting Waveguide Cavity
J. Verdú, H. Zoubi, Ch. Koller, J. Majer, H. Ritsch, J. Schmiedmayer
DOI 10.1103/PhysRevLett.103.043603 · Physical Review Letters
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Abstract
Placing an ensemble of 106 ultracold atoms in the near field of a superconducting coplanar waveguide resonator with a quality factor Q∼106, 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 geff/2π∼40 kHz larger than the cavity linewidth of κ/2π∼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.
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