A holographic model of SQUID
Rong-Gen Cai, Yong-Qiang Wang, Hai-Qing Zhang
TL;DR
This paper develops a holographic model of a SQUID using Einstein-Maxwell-complex scalar theory, capturing the interference effects of Josephson junctions and their dependence on magnetic flux.
Contribution
It introduces a novel holographic framework for modeling SQUIDs with two Josephson junctions on a Schwarzschild-AdS black brane.
Findings
Numerical relation between total current and magnetic flux established.
Interference effects of two Josephson junctions demonstrated.
Holographic approach successfully models SQUID behavior.
Abstract
We construct a holographic model of superconducting quantum interference device (SQUID) in the Einstein-Maxwell-complex scalar theory with a negative cosmological constant. The SQUID ring consists of two Josephson junctions which sit on two sides of a compactified spatial direction of a Schwarzschild-AdS black brane. These two junctions interfere with each other and then result in a total current depending on the magnetic flux, which can be deduced from the phase differences of the two Josephson junctions. The relation between the total current and the magnetic flux is obtained numerically.
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