English

A new entanglement measure based on the total concurrence

Quantum Physics 2026-01-01 v1

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 qq-concurrence (q2q\geq 2) we introduce the total concurrence. A bona fide measure of quantum entanglement is introduced, the Cqt\mathcal{C}^{t}_q-concurrence (q2q \geq 2), which is based on the total concurrence. Analytical lower bounds for the Cqt\mathcal{C}^{t}_q-concurrence are derived. In addition, an analytical expression is derived for the Cqt\mathcal{C}^{t}_q-concurrence in the cases of isotropic and Werner states. Furthermore, the monogamy relations that the Cqt\mathcal{C}^{t}_q-concurrence satisfies for qubit systems are examined. Additionally, based on the parameterized α\alpha-concurrence and its complementary dual, the Cαt\mathcal{C}^{t}_\alpha-concurrence (0α12)(0\leq\alpha\leq\frac{1}{2}) is also proposed.

Keywords

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

R2 v1 2026-07-01T08:45:28.872Z