# Experimental realization of a non-magnetic one-way spin switch

## TL;DR

This paper demonstrates a novel one-way spin switch device using a spin-orbit coupled Bose-Einstein condensate and a moving dipole potential, exploiting Galilean invariance breakdown for unidirectional control of spin states.

## Contribution

It introduces the first experimental realization of a non-magnetic one-way spin switch leveraging spin-orbit coupling and moving potentials.

## Key findings

- Successful experimental demonstration of the spin switch.
- Unidirectional control achieved via Galilean invariance breakdown.
- Potential for new quantum device designs.

## Abstract

Controlling magnetism through non-magnetic means is highly desirable for future electronic devices, as such means typically have ultra-low power requirements and can provide coherent control. In recent years, great experimental progress has been made in the field of electrical manipulation of magnetism in numerous material systems. These studies generally do not consider the directionality of the applied non-magnetic potentials and/or magnetism switching. Here, we theoretically conceive and experimentally demonstrate a non-magnetic one-way spin switch device using a spin-orbit coupled Bose-Einstein condensate subjected to a moving spin-independent dipole potential. The physical foundation of this unidirectional device is based on the breakdown of Galilean invariance in the presence of spin-orbit coupling. Such a one-way spin switch opens an avenue for designing novel quantum devices with unique functionalities and may facilitate further experimental investigations of other one-way spintronic and atomtronic devices.