On the Correlations between quantum entanglement and qq-information measures

Feb 19, 2003
8 pages
Published in:
  • Phys.Lett.A 318 (2003) 506-513
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Abstract: (Elsevier)
In the present Letter we revisit the application of the q -information measures R q of Rényi and S q of Tsallis to the discussion of special features of two qubits systems. More specifically, we study the correlations between the q -information measures and the entanglement of formation of a general (pure or mixed) state ρ describing a system of two qubits. The analysis uses a Monte Carlo procedure involving the 15-dimensional 2-qubits space of pure and mixed states, under the assumption that these states are uniformly distributed according to the product measure recently introduced by Zyczkowski et al. [Phys. Rev. A 58 (1998) 883].
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  • 7 figures. Submitted for publication
  • 03.67.-a
  • 89.70.+c
  • 03.65.Bz