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Superconducting Qubits

Microwave Circulation in an Extended Josephson Junction Ring

arXiv
Authors: Dat Thanh Le, Arkady Fedorov, Thomas M. Stace

Year

2025

Paper ID

16347

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

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.

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  • This paper contributes to the Superconducting Qubits research area in the Quantum Articles archive.
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  • Circulators are nonreciprocal devices that enable directional signal routing.

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