Generation of travelling sine-Gordon breathers in noisy long Josephson junctions

Abstract

The generation of travelling sine-Gordon breathers is achieved through the nonlinear supratransmission effect in a magnetically driven long Josephson junction, in the presence of losses, a current bias, and a thermal noise source. We demonstrate how to exclusively induce breather modes by means of controlled magnetic pulses. A nonmonotonic behavior of the breather-only generation probability is observed as a function of the noise intensity. An experimental protocol providing evidence of the Josephson breather's existence is proposed.

5 pages, 4 figures

References in corpus (3)

• Nonlinear supratransmission in multicomponent systems
• Perturbation theory for localized solutions of sine-Gordon equation: decay of a breather and pinning by microresistor
• Reversible Fluxon Logic with optimized CNOT gate components

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