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- Title
Tripartite entanglement of a spin star model with Dzialoshinski-Moriya interaction.
- Authors
Ma, Xiao; Zhao, Guang; Zhang, Jia; Wang, An
- Abstract
The effect of Dzialoshinski-Moriya (DM) interaction on the tripartite thermal entanglement of a spin-star model with four spins has been analyzed by an entanglement measure of the tripartite negativity. Our results imply that the tripartite thermal entanglement can be established among the three surrounding parties which do not interact with each other but interact with the central party independently. From the results, we find that the strong DM interaction can enhance the tripartite thermal entanglement while the high temperature can shrink it. The effect of the inhomogeneous coupling on the tripartite thermal entanglement is also discussed.
- Subjects
NUCLEAR spin; THERMAL analysis; MATHEMATICAL models; HIGH temperatures; PARITY (Physics); QUANTUM information theory
- Publication
Quantum Information Processing, 2013, Vol 12, Issue 1, p321
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-012-0378-7