Essential entanglement for atomic and molecular physics

TL;DR

This paper reviews recent advances in understanding quantum entanglement in atoms and molecules, emphasizing rigorous definitions and experimental progress, highlighting entanglement's role in physical properties beyond quantum information.

Contribution

It provides a comprehensive overview of entanglement in atomic and molecular physics, focusing on rigorous definitions and recent experimental and theoretical developments.

Findings

Entanglement is crucial for understanding correlations in quantum systems.

Recent progress includes experimental demonstrations and theoretical frameworks for entanglement in atoms and molecules.

The paper emphasizes the importance of rigorous definitions for entanglement in identical particles.

Abstract

Entanglement is nowadays considered as a key quantity for the understanding of correlations, transport properties, and phase transitions in composite quantum systems, and thus receives interest beyond the engineered applications in the focus of quantum information science. We review recent experimental and theoretical progress in the study of quantum correlations under that wider perspective, with an emphasis on rigorous definitions of the entanglement of identical particles, and on entanglement studies in atoms and molecules.