Separability of evolving W state in a noise environment
Qian-Tong Men, Li-zhen Jiang, Xiaoyu Chen · Communications in Theoretical Physics · 2021
Abstract Entanglement is an important resource for quantum information processing. We provide a new entanglement witness to detect the entanglement of an evolving W state. Our results show that the new entanglement witness matches the evolving W state better than other witnesses or methods. The new witness significantly improves the performance of entanglement detection for some three-qubit states.