Correlations in a multi-qubit state

ORAL

Abstract

For an arbitrary partition of a multi-qubit system, we define a correlation measure, which is directly based on a series of multi-qubit correlation functions, to characterize the total correlation among different parts. As an instructive application of our correlation measures, we investigate the entanglement of graph states.

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Authors

  • D.L. Zhou

    School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA

  • B. Zeng

    Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA, Department of Physics, Massachusetts Institute of Technology, MA 02139, USA

  • Z. Xu

    Center for Advanced Study, Tsinghua University, Beijing 100084, China

  • L. You

    School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA