Mutually unbiased measurement based entanglement witnesses
arXiv:1912.01807 · doi:10.1007/s10773-019-04263-9
Abstract
We study entanglement witness and present a construction of entanglement witnesses in terms of the mutually unbiased measurements (MUMs). These witnesses include the entanglement witnesses constructed from mutually unbiased bases (MUBs) as a special case. Comparing with the dimension dependence of MUBs, the witnesses can be always constructed from a complete set of MUMs for any dimension . We show that our witness can detect entanglement better than previous separability criterion given also by MUMs. And the approach can be experimentally implemented.
arXiv comment10 pages
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