Microwave Circulation in an Extended Josephson Junction Ring
Quantum Physics
2025-12-03 v1
Abstract
Circulators are nonreciprocal devices that enable directional signal routing. Nonreciprocity, which requires time-reversal symmetry breaking, can be produced in waveguides in which the propagation medium moves relative to the waveguide at a moderate fraction of the wave speed. Motivated by this effect, here we propose a design for nonreciprocal microwave transmission based on an extended, annular Josephson junction, in which the propagation medium consists of a train of moving fluxons. We show how to harness this to build a high-quality resonant microwave circulator, and we theoretically evaluate the anticipated performance of such a device.
Cite
@article{arxiv.2512.02264,
title = {Microwave Circulation in an Extended Josephson Junction Ring},
author = {Dat Thanh Le and Arkady Fedorov and Thomas M. Stace},
journal= {arXiv preprint arXiv:2512.02264},
year = {2025}
}
Comments
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