Macroscopic Entanglement of a Bose Einstein Condensate on a Superconducting Atom Chip

TL;DR

This paper proposes a feasible method to generate and analyze macroscopic entanglement between a Bose-Einstein condensate and a superconducting loop, enabling advanced quantum experiments and exploration of quantum-classical boundaries.

Contribution

It introduces a practical scheme for entangling a Bose-Einstein condensate with a superconducting loop in a superposition of flux states.

Findings

Scheme is theoretically feasible with current technology.

Enables interferometry of entangled atoms.

Provides a platform for exploring quantum-classical transition.

Abstract

We propose and analyse a practically implementable scheme to generate macroscopic entanglement of a Bose-Einstein condensate in a micro-magnetic trap magnetically coupled to a superconducting loop. We treat the superconducting loop in a quantum superposition of two different flux states coupled with the magnetic trap to generate macroscopic entanglement. Our scheme also provides a platform to realise interferometry of entangled atoms through the Bose-Einstein condensate and to explore physics at the quantum-classical interface.