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arXiv · 1008.4836

Entanglement of Grassmannian Coherent States for Multi-Partite n-Level Systems

Ghader Najarbashi·Yusef Maleki
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Abstract

In this paper, we investigate the entanglement of multi-partite Grassmannian coherent states (GCSs) described by Grassmann numbers for $n>2$ degree of nilpotency. Choosing an appropriate weight function, we show that it is possible to construct some well-known entangled pure states, consisting of {\bf GHZ}, {\bf W}, Bell, cluster type and bi-separable states, which are obtained by integrating over tensor product of GCSs. It is shown that for three level systems, the Grassmann creation and annihilation operators $b$ and $b^†$ together with $b_{z}$ form a closed deformed algebra, i.e., $SU_{q}(2)$ with $q=e^{\frac{2πi}{3}}$, which is useful to construct entangled qutrit-states. The same argument holds for three level squeezed states. Moreover combining the Grassmann and bosonic coherent states we construct maximal entangled super coherent states.

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Ghader Najarbashi, Yusef Maleki. 2011-01-24. Entanglement of Grassmannian Coherent States for Multi-Partite n-Level Systems. https://doi.org/10.3842/sigma.2011.011

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