Predominance of entanglement of formation over quantum discord under quantum channels

Steve Campbell*

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

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 correlations.

Original languageEnglish
Pages (from-to)2623-2636
Number of pages14
JournalQuantum Information Processing
Volume12
Issue number7
Early online date07 Mar 2013
DOIs
Publication statusPublished - Jul 2013

Keywords

  • Entanglement
  • Open systems
  • Quantum discord
  • Quantum correlations
  • PROBABILITY RELATIONS
  • SEPARATED SYSTEMS
  • STATES
  • MODEL

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Statistical and Nonlinear Physics
  • Signal Processing
  • Modelling and Simulation
  • Theoretical Computer Science

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