Entanglement witnesses from mutually unbiased measurements

Katarzyna Siudzińska; Dariusz Chruściński

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arXiv · 2109.14069

Entanglement witnesses from mutually unbiased measurements

Katarzyna Siudzińska·Dariusz Chruściński

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Abstract

A new family of positive, trace-preserving maps is introduced. It is defined using the mutually unbiased measurements, which generalize the notion of mutual unbiasedness of orthonormal bases. This family allows one to define entanglement witnesses whose indecomposability depends on the characteristics of the associated measurement operators.

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Katarzyna Siudzińska, Dariusz Chruściński. 2021-09-28. Entanglement witnesses from mutually unbiased measurements. https://arxiv.org/abs/2109.14069

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