期刊
ANNALEN DER PHYSIK
卷 16, 期 10-11, 页码 767-779出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.200710261
关键词
superconductivity; Josephson effect; mesoscopic physics
After reviewing the limitation by the fine structure constant alpha of the dimensionless coupling constant of an hydrogenic atom with a mode of the electromagnetic field in a cavity, we show that the situation presents itself differently for an artificial Josephson atom coupled to a transmission line resonator. Whereas the coupling constant for the case where such an atom is placed inside the dielectric of the resonator is proportional to alpha(1/2), the coupling of the Josephson atom when it is placed in series with the conducting elements of the resonator is proportional to alpha(-1/2) and can reach values greater than 1. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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