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Experimental Quantum Cloning with Prior Partial Information

Jiangfeng Du·Thomas Durt·Ping Zou·Hui Li·L. C. Kwek·C. H. Lai·C. H. Oh·Artur Ekert
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Abstract

When prior partial information about a state to be cloned is available, it can be cloned with a fidelity higher than that of universal quantum cloning. We experimentally verify this intriguing relationship between the cloning fidelity and the prior information by reporting the first experimental optimal quantum state-dependent cloning, using nuclear magnetic resonance techniques. Our experiments may further have important implications into many quantum information processing protocols.

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Jiangfeng Du, Thomas Durt, Ping Zou, Hui Li, L. C. Kwek, C. H. Lai, C. H. Oh, Artur Ekert. 2004-05-17. Experimental Quantum Cloning with Prior Partial Information. https://doi.org/10.1103/physrevlett.94.040505

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