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Sudden switch of correlation building velocity in a strong transverse field Ising spin chain

  • Y. GuoEmail author
  • Y. Liu
  • D.L. Zhou
Regular Article

Abstract

How fast to build correlations between two distant nodes in a spin network through local interactions is a practical problem in quantum information tasks. In this paper, we study the correlation building velocity in an Ising spin chain with a strong transverse field. We adopt and compare four correlation measures for characterizing different types of correlations, which include correlation function, mutual information, quantum discord, and entanglement of formation. We find that there is a sudden switch of the correlation building velocity with the increase of the number of spin, and the appearance of the sudden switch is independent of the correlation measures adopted.

Keywords

Quantum Optics 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of SciencesBeijingP.R. China
  2. 2.School of Physics and Electronic Science, Changsha University of Science and TechnologyChangshaP.R. China

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