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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
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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 $|< \textit{A}>| = 3.10\pm0.03 $, we also for the first time report a genuine three-photon entanglement. In addition, the entanglement properties of the cluster states are examined under $\sigma_z$ and $\sigma_x$ measurements on a qubit.

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An-Ning Zhang, Chao-Yang Lu, Xiao-Qi Zhou, Yu-Ao Chen, Zhi Zhao, Tao Yang, Jian-Wei Pan. 2005-01-09. Experimental Construction of Optical Multi-qubit Cluster States From Bell States. https://doi.org/10.1103/physreva.73.022330

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