Fortschritte der Physik
Quantum Tomography of the GHZ State
Giacomo Mauro D’Ariano, Morton H. Rubin, Massimiliano Federico Sacchi, Yanhua H. Shih
Abstract
We present a method of generation of the Greenberger–Horne–Zeilinger state involving type II and type I parametric downconversion, and triggering photodetectors. The state generated by the proposed experimental set-up can be reconstructed through multi-mode quantum homodyne tomography. The feasibility of the measurement is studied on the basis of Monte-Carlo simulations.