Macroscopic entanglement between a Bose Einstein condensate and a superconducting loop

TL;DR

This paper proposes a theoretical scheme for creating macroscopic entanglement between a Bose-Einstein condensate and a superconducting loop, enabling studies of quantum phenomena at a macroscopic scale.

Contribution

It introduces a novel method to generate and analyze macroscopic entanglement between a BEC and a superconducting loop using flux superposition states.

Findings

Macroscopic entanglement can be achieved via magnetic coupling.

The scheme enables quantum interferometry with BEC.

It offers a platform to explore quantum-classical boundary physics.

Abstract

We theoretically study macroscopic entanglement between a magnetically trapped Bose-Einstein condensate and a superconducting loop. We treat the superconducting loop in a quantum superposition of two different flux states coupling with the magnetic trap to generate macroscopic entanglement. The scheme also provides a platform to investigate interferometry with an entangled Bose Einstein condensate and to explore physics at the quantum-classical interface.