Control of transport characteristics in two coupled Josephson junctions

TL;DR

This paper theoretically investigates how different control schemes affect the transport properties of two coupled Josephson junctions, revealing diverse anomalous regimes under various current driving scenarios.

Contribution

It compares two control scenarios for coupled Josephson junctions, highlighting their impact on current-voltage characteristics and transport regimes.

Findings

Diverse anomalous transport regimes identified

Control scenario influences transport behavior

Theoretical insights into coupled junction dynamics

Abstract

We report on a theoretical study of transport properties of two coupled Josephson junctions and compare two scenarios for controlling the current-voltage characteristics when the system is driven by an external biased DC current and unbiased AC current consisting of one harmonic. In the first scenario, only one junction is subjected to both DC and AC currents. In the second scenario the signal is split -- one junction is subjected to the DC current while the other is subjected to the AC current. We study DC voltages across both junctions and find diversity of anomalous transport regimes for the first and second driving scenarios.