Corpus ID: 119087294

Geometric measure of entanglement for multipartite quantum states

  title={Geometric measure of entanglement for multipartite quantum states},
  author={T. Wei and P. M. Goldbart},
  journal={arXiv: Quantum Physics},
  • T. Wei, P. M. Goldbart
  • Published 2002
  • Mathematics, Physics
  • arXiv: Quantum Physics
  • The degree to which a pure quantum state is entangled can be characterized by the distance or angle to the nearest unentangled state. This geometric measure of entanglement, already present in a number of settings [A. Shimony, Ann. NY. Acad. Sci. 755, p.675 (1995) and H. Barnum and N. Linden, J. Phys. A: Math. Gen. 34, p.6787 (2001)], is explored for bipartite and multipartite pure and mixed states. It is determined for arbitrary two-qubit mixed states and for generalized Werner and isotropic… CONTINUE READING


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