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

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

*この研究の対応する著者

研究成果: Article査読

204 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号220502
ジャーナルPhysical Review Letters
94
22
DOI
出版ステータスPublished - 2005 6月 10
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

引用スタイル