Mutually Unbiased Measurement Based Entanglement Witnesses

  title={Mutually Unbiased Measurement Based Entanglement Witnesses},
  author={Tao Li and Le-Min Lai and S. M. Fei and Zhi-Xi Wang},
  journal={International Journal of Theoretical Physics},
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 $d+1$ MUMs for any dimension $d$. We show that our witness can detect entanglement better than previous separability criterion… 
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Quantum Entanglement
  • M. Lewenstein
  • Physics, Computer Science
    Do We Really Understand Quantum Mechanics?
  • 2019
A brief overview of the concept of entanglement in quantum mechanics is given, and the major results and open problems related to the recent scientific progress in this field are discussed.