# Photovoltaic Effect of Atomtronics Induced by Artificial Gauge Field

## TL;DR

This paper explores how artificial gauge fields in atomtronics can induce a photovoltaic effect, creating controllable atomic currents analogous to Josephson junctions, with potential for experimental detection via optical spectra.

## Contribution

It introduces a novel photovoltaic effect in atomtronics driven by artificial gauge fields, establishing a link between atomic currents and magnetic flux similar to Josephson junction behavior.

## Key findings

- Atomic current polarization depends on effective magnetic flux.
- Atomic flow can be controlled by light direction and system parameters.
- Atomic current detection is feasible through optical emission spectra.

## Abstract

We investigate photovoltaic effect of atomtronics induced by artificial gauge field in four optical potentials. Effective magnetic flux gives rise to polarization of atom occupation probability which creates current of atomtronics. The relation between atomic current and magnetic flux behaves like the current-phase property in Josephson junction. The photovoltaic cell is well defined by the atomic opened system which have effective voltage and two different poles that correspond to two internal states of atomtronics. The atom flow is controllable by changing the direction of incident light and other system parameters. Detection of the atomic current intensity is available through light emission optical spectrum in experiments.