Scheme for preparation of the W-state by using linear optical elements
Guo‐Yong Xiang, Yongsheng Zhang, Jian Li, Guang‐Can Guo · Journal of Optics B Quantum and Semiclassical Optics · 2003
We present an experimental scheme of preparing the three-photon W-state in this paper. This scheme is based on a linear optical element, four polarization-entangled photons produced in spontaneous parametric down-conversion and single-photon detection. Effects of the imperfection of optical elements on nonlocality are also discussed.