Predominance of entanglement of formation over quantum discord under quantum channels

  title={Predominance of entanglement of formation over quantum discord under quantum channels},
  author={Steve Campbell},
  journal={Quantum Information Processing},
  • S. Campbell
  • Published 27 July 2012
  • Physics
  • Quantum Information Processing
We present a study of the behavior of two different figures of merit for quantum correlations, entanglement of formation and quantum discord, under quantum channels showing how the former can, counterintuitively, be more resilient to such environments spoiling effects. By exploiting strict conservation relations between the two measures and imposing necessary constraints on the initial conditions we are able to explicitly show this predominance is related to build-up of the system-environment… 
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