Separability of rank two quantum states

  title={Separability of rank two quantum states},
  author={S. Albeverio and S. Fei and Debashish Goswami},
  journal={Physics Letters A},
  • S. Albeverio, S. Fei, Debashish Goswami
  • Published 2001
  • Physics
  • Physics Letters A
  • Abstract Explicit sufficient and necessary conditions for separability of higher-dimensional quantum systems with rank two density matrices are given. A nonseparability inequality is also presented, for the case where one of the eigenvectors corresponding to nonzero eigenvalues is a maximally entangled state. 
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