Experimental Construction of Optical Multi-qubit Cluster States From Bell States
An-Ning Zhang, Chao-Yang Lu, Xiao-Qi Zhou, Yu-Ao Chen, Zhi Zhao, Tao Yang, Jian-Wei Pan
Abstract
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>| = 3.100.03 , 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.
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