Use of a Coherent-State Formalism in Superconductivity and Josephson-Junction Calculations

Year: 1979

Authors: Bonifacio R., Milani M., Scully M.

Autors Affiliation: Istituto di Fisica dell’Università, Milano, Italia;
Optical Sciences Center, University of Arizona, Tucson, USA;
Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy

Abstract: An investigation is made of the extent to which harmonic-oscillator coherent states can be used to describe superconductivity and Josephson tunneling phenomena. Recent work has utilized angular-momentum commutation relations for operators that create and annihilate pairs in a Josephson device. This formalism utilizes certain approximations in obtaining angular-momentum commutation rules for the superconducting tunnel junction. We apply the coupled harmonic-oscillator approach due to Schwinger to regain angular-momentum commutation relations.

Journal/Review: NUOVO CIMENTO DELLA SOCIETA’ ITALIANA DI FISICA B – Basic Topics in Physics

Volume: 50 (1)      Pages from: 152  to: 160

KeyWords: harmonic oscillators
DOI: 10.1007/BF02737626

Citations: 2
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