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Superconducting atomic contacts inductively coupled to a microwave resonator

C Janvier 1 L Tosi 2 Ç. Ö. Girit 1 M.F. Goffman 1 Hugues Pothier 1 Christian Urbina 1, *
* Corresponding author
1 QUANTRONICS - Quantronics Group
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : We describe and characterize a microwave setup to probe the Andreev levels of a superconducting atomic contact. The contact is part of a superconducting loop inductively coupled to a superconducting coplanar resonator. By monitoring the resonator reflection coefficient close to its resonance frequency as a function of both flux through the loop and frequency of a second tone we perform spectroscopy of the transition between two Andreev levels of highly transmitting channels of the contact. The results indicate how to perform coherent manipulation of these states.
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C Janvier, L Tosi, Ç. Ö. Girit, M.F. Goffman, Hugues Pothier, et al.. Superconducting atomic contacts inductively coupled to a microwave resonator. Journal of Physics: Condensed Matter, IOP Publishing, 2014, 26, pp.474208. ⟨10.1088/0953-8984/26/47/474208⟩. ⟨cea-01384806⟩

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