Generating multiphoton Greenberger-Horne-Zeilinger states with weak cross-Kerr nonlinearity
Guang-Sheng Jin, Yuan Hua Lin, Biao Wu · Physical Review A · 2007
We propose a scheme to generate polarization-entangled multiphoton Greenberger-Horne-Zeilinger states with weak cross-Kerr nonlinearity based on controlled bus rotation and subsequent homodyne measurement. Our method is simple in operation and has high success probabilities with near perfect fidelities in an ideal case.