17 May 2024 | Pontus Laurell, Allen Scheie, Elbio Dagotto, D. Alan Tennant
This review discusses the detection and certification of entanglement and quantum correlations in quantum materials, focusing on experimental techniques and theoretical frameworks. It highlights the importance of entanglement in understanding quantum many-body phenomena and its potential applications in quantum technologies. The review covers various entanglement witnesses and quantum correlation measures, including magnetic susceptibility, one-tangle, concurrence, two-tangle, two-site quantum discord, and quantum coherence measures like quantum Fisher information. These quantities are accessible through collective measurements, such as susceptibility and spectroscopic techniques, and are used to detect and quantify entanglement in materials. The review also discusses the limitations of entanglement detection in many-body systems and the challenges of applying these methods to quantum materials. It emphasizes the interdisciplinary nature of this research and the ongoing progress in understanding quantum correlations in condensed matter systems. The review concludes with a discussion of future prospects in entanglement dynamics, entangled spectroscopic probes, and the potential applications of entanglement in quantum technologies.This review discusses the detection and certification of entanglement and quantum correlations in quantum materials, focusing on experimental techniques and theoretical frameworks. It highlights the importance of entanglement in understanding quantum many-body phenomena and its potential applications in quantum technologies. The review covers various entanglement witnesses and quantum correlation measures, including magnetic susceptibility, one-tangle, concurrence, two-tangle, two-site quantum discord, and quantum coherence measures like quantum Fisher information. These quantities are accessible through collective measurements, such as susceptibility and spectroscopic techniques, and are used to detect and quantify entanglement in materials. The review also discusses the limitations of entanglement detection in many-body systems and the challenges of applying these methods to quantum materials. It emphasizes the interdisciplinary nature of this research and the ongoing progress in understanding quantum correlations in condensed matter systems. The review concludes with a discussion of future prospects in entanglement dynamics, entangled spectroscopic probes, and the potential applications of entanglement in quantum technologies.