Ultrahigh finesse Fabry-Pérot superconducting resonator
- Kuhr, S.
- Gleyzes, S.
- Guerlin, C.
- Bernu, J.
- Hoff, U. B.
- Deleglise, S.
- Osnaghi, S.
- Brune, M.
- Raimond, J. -M.
- Haroche, S.
- Jacques, E.
- Bosland, P.
- Visentin, B.
DOIAbstract
The authors have built a microwave Fabry-Perot resonator made of diamond-machined copper mirrors coated with superconducting niobium. Its damping time (T-c=130 ms at 51 GHz and 0.8 K) corresponds to a finesse of 4.6x10(9), the highest ever reached for a Fabry-Perot in any frequency range. This result opens many perspectives for quantum information processing, decoherence and nonlocality studies
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