We investigate correlations among complementary observables. In particular, we show how to take advantage of mutually unbiased bases for the efficient detection of entanglement in arbitrarily high-dimensional, multipartite, and continuous-variable quantum systems. The introduced entanglement criteria are relatively easy to implement experimentally since they require only a few local measurement settings. In addition, we establish a link between the separability problem and the maximum number of mutually unbiased bases-opening an additional avenue in this long-standing open problem.
|Number of pages||8|
|Journal||Physical Review A: Atomic, Molecular and Optical Physics|
|Publication status||Published - 9 Aug 2012|
- KINGS PROBLEM