Teleportation Criteria: Form and Significance

Details Teleportation Criteria: Form and Significance Teleportation Criteria: Form and Significance

2000-04-25

arxiv.org/abs/quant-ph/0004093v1

Lecture Notes in Physics; Directions in Quantum Optics, 187 (Springer-Verlag Berlin Heidelberg 2001).

Physics

Quantum Physics

6 pages, to appear in Lecture Notes in Physics; Dan Walls Memorial Volume (Springer 2000)

Scientific paper

Our criteria for continuous variable quantum teleportation [T.C.Ralph and P.K.Lam, Phys.Rev.Lett. {\bf 81}, 5668 (1998)] take the form of sums, rather than products, of conjugate quadrature measurements of the signal transfer coefficients and the covariances between the input and output states. We discuss why they have this form. We also discuss the physical significance of the covariance inequality.

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