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Annular Long Josephson Junctions in a Magnetic Field: Engineering and Probing the Fluxon Interaction Potential

A. Wallraff·Yu. Koval·M. Levitchev·M. V. Fistul·A. V. Ustinov
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Abstract

The interaction of a Josephson fluxon with an external magnetic field-induced potential in a long Josephson junction is investigated experimentally. The thermal activation of the fluxon from a potential well is observed and experiments probing its predicted quantum properties are discussed. A method for engineering a magnetic double-well potential for a fluxon is proposed and the use of the coupled fluxon states for quantum computation is suggested.

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A. Wallraff, Yu. Koval, M. Levitchev, M. V. Fistul, A. V. Ustinov. 1999-11-26. Annular Long Josephson Junctions in a Magnetic Field: Engineering and Probing the Fluxon Interaction Potential. https://arxiv.org/abs/cond-mat/9911437

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