A new entanglement measure based on the total concurrence
Abstract
Quantum entanglement is a crucial resource in quantum information processing, advancing quantum technologies. The greater the uncertainty in subsystems' pure states, the stronger the quantum entanglement between them. From the dual form of -concurrence () we introduce the total concurrence. A bona fide measure of quantum entanglement is introduced, the -concurrence (), which is based on the total concurrence. Analytical lower bounds for the -concurrence are derived. In addition, an analytical expression is derived for the -concurrence in the cases of isotropic and Werner states. Furthermore, the monogamy relations that the -concurrence satisfies for qubit systems are examined. Additionally, based on the parameterized -concurrence and its complementary dual, the -concurrence is also proposed.
Cite
@article{arxiv.2512.24057,
title = {A new entanglement measure based on the total concurrence},
author = {Dong-Ping Xuan and Zhong-Xi Shen and Wen Zhou and Zhi-Xi Wang and Shao-Ming Fei},
journal= {arXiv preprint arXiv:2512.24057},
year = {2026}
}
Comments
19pages, 12 figures