Entanglement detection via mutually unbiased bases

Christoph Spengler*, Marcus Huber, Steve Brierley, Theodor Adaktylos, Beatrix C. Hiesmayr

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

152 Citations (Scopus)


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.

Original languageEnglish
Article number022311
Number of pages8
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Issue number2
Publication statusPublished - 9 Aug 2012




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