LINEAR OPTICAL PROTOCOL FOR GENERATION OF W STATE WITHIN A NETWORK
Pei-Min Lu, Yan Xia, Jie Song, He‐Shan Song · International Journal of Quantum Information · 2010
We demonstrate a linear optical protocol to generate W state in terms of optical elements within a network. The proposed setup involves simple linear optical elements, N-photon polarization entangled state, and conventional photon detectors that only distinguish the vacuum and nonvacuum Fock number states. We show that with local operations, single-photon measurement, and one way classical communication, the protocol can be successfully realized with a certain probability.