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arXiv · 1701.02724

The binegativity of two qubits

Mark W. Girard·Gilad Gour
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Abstract

We introduce an entanglement-related quantity that we call the binegativity. Based on numerical evidence, we conjecture that the binegativity is an entanglement measure for two-qubit states. The binegativity is compared to the concurrence and negativity, the only known entanglement measures that can be computed analytically for all two-qubit states. The ordering of entangled two-qubit mixed states induced by the binegativity is distinct from the ordering determined by previously known measures, yielding possible new insights into the structure of entangled two-qubit mixed states.

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Mark W. Girard, Gilad Gour. 2017-01-10. The binegativity of two qubits. https://arxiv.org/abs/1701.02724

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