# Experimental quantum cloning with prior partial information.

@article{Du2005ExperimentalQC, title={Experimental quantum cloning with prior partial information.}, author={Jiangfeng Du and Thomas Durt and Ping Zou and Hui Li and Leong Chuan Kwek and C. H. Lai and C. H. Oh and Artur K. Ekert}, journal={Physical review letters}, year={2005}, volume={94 4}, pages={ 040505 } }

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 cloner, using nuclear magnetic resonance techniques. Our experiments may further cast important implications into many quantum information processing protocols.

## 90 Citations

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