Jianwei Xu
Published 2010-12-03, updated 2011-06-01Version 2
The original definition of quantum discord of bipartite states was defined over projective measurements, in this paper we discuss some generalizations of it. These generalizations are defined over general measurements, rank-one general measurements or Neumark extension measurements. We investigate the nonnegativity, zero-discord sets of all these quantum discords and some properties about them.
Geometric measure of quantum discord over two-sided projective measurements
Quantum discord in spin-cluster materials
On the optimal measurement for quantum discord of two-qubit states
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