Entanglement condition via su(2) and su(1,1) algebra using Schrodinger-Robertson uncertainty relation Academic Article uri icon


  • The Schrdinger-Robertson inequality generally provides a stronger bound on the product of uncertainties for two noncommuting observables than the Heisenberg uncertainty relation, and as such it can yield a stricter separability condition in conjunction with partial transposition. In this paper, using the Schrdinger-Robertson uncertainty relation, the separability condition previously derived from the su(2) and su(1,1) algebra is made stricter and refined to a form invariant with respect to local phase shifts. Furthermore, a linear optical scheme is proposed to test this invariant separability condition. 2007 The American Physical Society.

published proceedings


author list (cited authors)

  • Nha, H.

citation count

  • 30

complete list of authors

  • Nha, Hyunchul

publication date

  • July 2007