Entanglement properties in mixed spin-(1,s) systems

We obtain an exact expression of the negativity for SU(2)-invariant bipartite spin-(1,s) states via the partial time reversal method. Studies of thermal states show that the threshold temperature of entanglement may be arbitrary high when s is sufficient large, indicating that the entanglement is very robust against temperature. Negativities in bilinear-biquadratic system are also considered.

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Year of publication:	2008
Authors:	Huang, Huaixiang ; Wang, Xiaoguang ; Sun, Zhe ; Yang, Guohong
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 387.2008, 12, p. 2736-2744
Publisher:	Elsevier
Subject:	Entanglement \| Time reversal \| Negativity \| SU(2) \| Spin

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

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