High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables

Details High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables

2005-01-17

arxiv.org/abs/quant-ph/0501086v2

Phys. Rev. Lett. 94, 220502 (2005).

Physics

Quantum Physics

revised version, 4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.94.220502

We experimentally demonstrate continuous-variable quantum teleportation beyond the no-cloning limit. We teleport a coherent state and achieve the fidelity of 0.70$\pm$0.02 that surpasses the no-cloning limit of 2/3. Surpassing the limit is necessary to transfer the nonclassicality of an input quantum state. By using our high-fidelity teleporter, we demonstrate entanglement swapping, namely teleportation of quantum entanglement, as an example of transfer of nonclassicality.

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