Generation of hyperentangled four-photon cluster state via cross-Kerr nonlinearity
Xiang Yan, Ya‐Fei Yu, Zhi‐Ming Zhang · Chinese Physics B · 2014
We propose a scheme for generating a hyperentangled four-photon cluster state that is simultaneously entangled in polarization modes and spatial modes. This scheme is based on linear optical elements, weak cross-Kerr nonlinearity, and homodyne detection. Therefore, it is feasible with current experimental technology.