High Q Cavity Induced Fluxon Bunching in Inductively Coupled Josephson Junctions

TL;DR

This paper investigates how a resonant cavity can induce fluxon bunching in inductively coupled Josephson junctions, leading to a transition from separated fluxons to a synchronized high-energy fluxon mode.

Contribution

It presents a theoretical and numerical analysis of cavity-induced fluxon bunching in coupled Josephson junctions, revealing a transition to a synchronized fluxon state.

Findings

Cavity can induce fluxon bunching and synchronization.

Transition from separated to high-energy fluxon modes.

Potential control of fluxon dynamics via cavity coupling.

Abstract

We consider fluxon dynamics in a stack of inductively coupled long Josephson junctions connected capacitively to a common resonant cavity at one of the boundaries. We study, through theoretical and numerical analysis, the possibility for the cavity to induce a transition from the energetically favored state of spatially separated shuttling fluxons in the different junctions to a high velocity, high energy state of identical fluxon modes.