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

Nobuyuki Takei*, Hidehiro Yonezawa, Takao Aoki, Akira Furusawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

221 Citations (Scopus)


We experimentally demonstrate continuous-variable quantum teleportation beyond the no-cloning limit. We teleport a coherent state and achieve the fidelity of 0.70±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.

Original languageEnglish
Article number220502
JournalPhysical Review Letters
Issue number22
Publication statusPublished - 2005 Jun 10
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

Cite this