Experimental entanglement of six photons in graph states
Experimental entanglement of six photons in graph states
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DOI:
10.1038/nphys507
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发表时间:
2007-02-01
期刊:
影响因子:
19.6
通讯作者:
Pan, Jian-Wei
中科院分区:
文献类型:
--
作者:
Lu, Chao-Yang;Zhou, Xiao-Qi;Pan, Jian-Wei
Graph states(1-3)-multipartite entangled states that can be represented by mathematical graphs - are important resources for quantum computation(4), quantum error correction(3), studies of multiparticle entanglement(1) and fundamental tests of non-locality(5-7) and decoherence(8). Here, we demonstrate the experimental entanglement of six photons and engineering of multiqubit graph states(9-11). We have created two important examples of graph states, a six-photon Greenberger-Horne-Zeilinger state(5), the largest photonic Schrodinger cat so far, and a six-photon cluster state(2), a state-of-the-art 'one-way quantum computer'(4). With small modifications, our method allows us, in principle, to create various further graph states, and therefore could open the way to experimental tests of, for example, quantum algorithms(4,12) or loss- and fault-tolerant one-way quantum computation(13,14).