A postselection-based linear optical scheme for generation of a three-photon W state
Binbin Zhang, Yu Liu · Journal of Physics B Atomic Molecular and Optical Physics · 2009
We propose a novel linear optical scheme to generate a three-photon W state, which is based on postselection of final outcome events. The success probability of our proposal has been improved to be 21/32, higher than that of the previous methods using the linear optical system. We also discuss the effects of realistic photon resources on its experimental realization and compare our scheme with the nonlinear optical approach to the three-photon W state generation. The idea of our proposal suggests a new way to improve the generation efficiency of some other entangled states and may have a promising application.