Preprint 63/2018

Tighter monogamy relations in multi-qubit systems

Zhi-Xiang Jin, Jun Li, Tao Li, and Shao-Ming Fei

Contact the author: Please use for correspondence this email.
Submission date: 20. Aug. 2018
Pages: 11
published in: Physical review / A, 97 (2018) 3, art-no. 032336 
DOI number (of the published article): 10.1103/PhysRevA.97.032336
Download full preprint: PDF (404 kB)

Monogamy relations characterize the distributions of entanglement in multipartite systems. We investigate monogamy relations related to the concurrence C, the entanglement of formation E, negativity Nc and Tsallis-q entanglement Tq. New α-th power of entanglement monogamy relations have been derived, which are tighter than the existing entanglement monogamy relations for some classes of quantum states. Detailed examples are presented.

31.08.2018, 00:13