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arxiv: 1105.6318 · v1 · pith:PW4OTNORnew · submitted 2011-05-31 · 🪐 quant-ph

Observation of eight-photon entanglement

Xing-Can Yao , Tian-Xiong Wang , Ping Xu , He Lu , Ge-Sheng Pan , Xiao-Hui Bao , Cheng-Zhi Peng , Chao-Yang Lu
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Yu-Ao Chen Jian-Wei Pan
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classification 🪐 quant-ph
keywords eight-photonphotonsabilityconversioncreationdemonstratedetectiondown
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Using ultra-bright sources of pure-state entangled photons from parametric down conversion, an eight-photon interferometer and post-selection detection, we demonstrate the ability to experimentally manipulate eight individual photons and report the creation of an eight-photon Schr\"odinger cat state with an observed fidelity of $0.708 \pm 0.016$.

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