Entanglement of three-qubit random pure states

Abstract

We study non-local properties of generic three-qubit pure states. First, we obtain the distributions of both the coefficients and the only phase in the five-term decomposition of Acín et al. for an ensemble of random pure states generated by the Haar measure on U(8). Furthermore, we analyze the probability distributions of two sets of polynomial invariants. One of these sets allows us to classify three-qubit pure states into four classes. Entanglement in each class is characterized using the minimal Rényi-Ingarden-Urbanik entropy. Besides, the fidelity of a three-qubit random state with the closest state in each entanglement class is investigated. We also present a characterization of these classes and the SLOCC classes in terms of the corresponding entanglement polytope.

arXiv comment22 pages

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• W-class states-identification and quantification of Bell-CHSH inequalities' violation
• Fidelity and Entanglement of Random Bipartite Pure States: Insights and Applications
• Two- and three-mode squeezing in a three-qubit entangled system
• Statistics of Entanglement Transformation with Hierarchies among Catalysts