Annular Long Josephson Junctions in a Magnetic Field: Engineering and Probing the Fluxon Interaction Potential
نویسنده
چکیده
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.
منابع مشابه
Engineering double-well potentials with variable-width annular Josephson tunnel junctions.
Long Josephson tunnel junctions are non-linear transmission lines that allow propagation of current vortices (fluxons) and electromagnetic waves and are used in various applications within superconductive electronics. Recently, the Josephson vortex has been proposed as a new superconducting qubit. We describe a simple method to create a double-well potential for an individual fluxon trapped in ...
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Radiative Losses in Collisions of Two Fluxons in Dc Driven Damped Josephson Junctions
1. One of the important applications of Josephson junctions (JJs) is connected with their use for microwave radiation generation [1-3]. In particular, radiation emission accompanies different dynamical processes involving magnetic flux quanta (fluxons). In the case of one fluxon the generation may be stipulated by junction inhomogeneity (e.g., on account of reflecting ends [1] or spatially dist...
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