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SUPERCONDUCTING VORTEX-BASED MICROWAVE CIRCULATOR
Patent Number: Publication Number 2022/0094029 A1
Abstract
This invention consists of a design model of a microwave circulator reliant on the motion of a single persistent-current vortex in a small superconducting circuit of Josephson junctions to induce nonreciprocal behavior. The model indicates the capability of enabling a small-scale, moderate-bandwidth, and low-insertion loss circulator at very low magnetic fields and at microwave frequencies relevant for experiments with qubits.