Dynamical control of the conductivity of an atomic Josephson junction

TL;DR

This paper proposes a method to dynamically control the conductivity of an atomic Josephson junction using periodic modulation, enabling simulation of optically enhanced superconductivity in ultracold atom systems.

Contribution

It introduces a novel approach to modulate junction conductivity via parametric driving, linking ultracold atom experiments with high-temperature superconductor phenomena.

Findings

Low-frequency conductivity can be enhanced or suppressed by tuning the driving frequency.

The method offers a quantum simulation platform for optically induced superconductivity.

Demonstrates control over atomic Josephson junctions through dynamic modulation.

Abstract

We propose to dynamically control the conductivity of a Josephson junction composed of two weakly coupled one dimensional condensates of ultracold atoms. A current is induced by a periodically modulated potential difference between the condensates, giving access to the conductivity of the junction. By using parametric driving of the tunneling energy, we demonstrate that the low-frequency conductivity of the junction can be enhanced or suppressed, depending on the choice of the driving frequency. The experimental realization of this proposal provides a quantum simulation of optically enhanced superconductivity in pump-probe experiments of high temperature superconductors.