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Open Quantum Systems Decoherence
Entanglement Theory Quantum Correlations
Optimal entanglement witnesses based on local orthogonal observables
arXiv
Authors: Cheng-Jie Zhang, Yong-Sheng Zhang, Shun Zhang, Guang-Can Guo
Year
2007
Paper ID
50317
Status
Preprint
Abstract Read
~2 min
Abstract Words
76
Citations
N/A
Abstract
We show that the entanglement witnesses based on local orthogonal observables which are introduced in [S. Yu and N.-L. Liu, Phys. Rev. Lett. 95, 150504 (2005)] and [O. Gühne, M. Mechler, G. Tóth and P. Adam, Phys. Rev. A 74, 010301 (2006)] in linear and nonlinear forms can be optimized, respectively. As applications, we calculate the optimal nonlinear witnesses of pure bipartite states and show a lower bound on the I-concurrence of bipartite higher dimensional systems with our method.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- We show that the entanglement witnesses based on local orthogonal observables which are introduced in [S.
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