Entanglement witnesses from mutually unbiased measurements
AbstractA 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. We provide examples of indecomposable witnesses and compare their entanglement detection properties with the realignment criterion.
1994 ◽
Vol 52
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pp. 168-169
1989 ◽
Vol 47
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pp. 778-779
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2021 ◽
Vol 147
(3)
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pp. 04021001