Vortex entanglement in Bose-Einstein condensates coupled to Laguerre-Gauss beams

TL;DR

This paper demonstrates a method to transfer entanglement from entangled Laguerre-Gauss photons to vortex states in Bose-Einstein condensates, enabling potential low-dissipation quantum communication channels.

Contribution

It introduces a novel scheme for establishing vortex entanglement in remote BECs via light-to-matter OAM transfer, advancing quantum communication technology.

Findings

Efficient transfer of OAM entanglement from photons to BEC vortices.

Feasibility of practical implementation of vortex entanglement transfer.

Proposed technique for indirect detection of vortex entanglement.

Abstract

We study the establishment of vortex entanglement in remote and weakly interacting Bose Einstein condensates. We consider a two-mode photonic resource entangled in its orbital angular momentum (OAM) degree of freedom and, by exploiting the process of light-to-BEC OAM transfer, demonstrate that such entanglement can be efficiently passed to the matter-like systems. Our proposal thus represents a building block for novel low-dissipation and long-memory communication channels based on OAM. We discuss issues of practical realizability, stressing the feasibility of our scheme and present an operative technique for the indirect inference of the set vortex entanglement.