Cluster states serve as the central physical resource for the measurement-based quantum computation. We here present a simple experimental demonstration of the scalable cluster-state-construction scheme proposed by Browne and Rudolph. In our experiment, three-photon cluster states are created from two Bell states using linear optical devices. By observing a violation of three-particle Mermin inequality of ∣<A>∣=3.10±0.03, we also for the first time report a genuine three-photon entanglement. In addition, the entanglement properties of the cluster states are examined under σz and σx measurements on a qubit.
@article{arxiv.quant-ph/0501036,
title = {Experimental Construction of Optical Multi-qubit Cluster States From Bell States},
author = {An-Ning Zhang and Chao-Yang Lu and Xiao-Qi Zhou and Yu-Ao Chen and Zhi Zhao and Tao Yang and Jian-Wei Pan},
journal= {arXiv preprint arXiv:quant-ph/0501036},
year = {2015}
}