Generation of four-photon polarization-entangled cluster states via cross-Kerr nonlinearity
Lai Bo-Hui, Gang Du, Yu Ya-Fei, Zhiming Zhang, Songhao Liu, 华南师范大学信息光电子科技学院,光子信息技术广东省高校重点实验室，量子信息技术实验室,广州 510006 · Acta Physica Sinica · 2010
We propose a scheme for generating four-photon polarization-entangled cluster states based on the cross-Kerr nonlinear interaction between field-modes. Compared with other schemes, our scheme introduces the idea of parity gate and uses the non-destructive measurement method based on homodyne detection, which is easier to implement in experiment.