Negativity Bounds for Weyl–Heisenberg Quasiprobability Representations

  title={Negativity Bounds for Weyl–Heisenberg Quasiprobability Representations},
  author={John Debrota and Christopher A. Fuchs},
  journal={Foundations of Physics},
The appearance of negative terms in quasiprobability representations of quantum theory is known to be inevitable, and, due to its equivalence with the onset of contextuality, of central interest in quantum computation and information. Until recently, however, nothing has been known about how much negativity is necessary in a quasiprobability representation. Zhu (Phys Rev Lett 117 (12):120404, 2016) proved that the upper and lower bounds with respect to one type of negativity measure are… 
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