Es. Guerra et Jc. Retamal, Realization of atomic Greenberger-Horne-Zeilinger states via cavity quantum electrodynamics, J MOD OPT, 46(2), 1999, pp. 295-302
In this work we propose a scheme in which it is possible to generate atomic
Greenberger-Horner-Zeilinger (GHZ) states by letting three-level atoms in
a lambda configuration interact with a cavity field followed by a displacem
ent of the cavity held and selective measurements on two-level atoms which
disentangle the atoms and field stales. We also propose a GHZ test based on
such states.