Continuous-variables teleportation of a two-particle entangled state

We consider teleportation of a two-particle pure entangled state, using a triplet of the Greenbergrr-Horne-Zeilinger form. A continuous three-particle basis has been found for the joint measurement of momentum of single particle and total momentum and relative position of two other particles. The optical realization is discussed making use of squeezed states of light for which the measurement of momentum and position is reduced to the detection of the quadrature operators of electromagnetic field. (C) 2001 Published by Elsevier Science B.V.