Quantum Entanglement Unmasked by Entanglement Witnesses

A new method quantifies quantum entanglement using normalized entanglement witnesses, enhancing the ability to measure entanglement across different scenarios.

Prof. Sixia Yu, Associate Researcher Liangliang Sun, and Xiang Zhuo from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), in collaboration with Prof. XU Zhenpeng from Anhui University (AHU) and Armin Tavakoli from Lund University, proposed an approach to quantify entanglement using the standard entanglement witness procedure under three common experimental scenarios. Their work was published recently in Physical Review Letters.