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arXiv · 0704.2961

On maximal entanglement between two pairs in four-qubit pure states

Stephen Brierley·Atsushi Higuchi
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Abstract

We show that the state with the highest known average two-particle von Neumann entanglement entropy proposed by Sudbery and one of the authors gives a local maximum of this entropy. We also show that this is not the case for an alternative highly entangled state proposed by Brown et al.

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Stephen Brierley, Atsushi Higuchi. 2007-07-03. On maximal entanglement between two pairs in four-qubit pure states. https://doi.org/10.1088/1751-8113/40/29/018

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