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Letter

Nature Physics 3, 91–95 (1 February 2007) | doi:10.1038/nphys507

Experimental entanglement of six photons in graph states

Chao-Yang Lu , Xiao-Qi Zhou , Otfried G|[uuml]|hne , Wei-Bo Gao , Jin Zhang , Zhen-Sheng Yuan , Alexander Goebel , Tao Yang & Jian-Wei Pan

Graph states—multipartite entangled states that can be represented by mathematical graphs—are important resources for quantum computation, quantum error correction, studies of multiparticle entanglement and fundamental tests of non-locality and decoherence. Here, we demonstrate the experimental entanglement of six photons and engineering of multiqubit graph states.