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- Title
Demonstration of a quantum teleportation network for continuous variables.
- Authors
Yonezawa, Hidehiro; Aoi&, Takao; Furusawa, Akira
- Abstract
Quantum teleportation involves the transportation of an unknown quantum state from one location to another, without physical transfer of the information carrier. Although quantum teleportation is a naturally bipartite process, it can be extended to a multipartite protocol known as a quantum teleportation network. In such a network, entanglement is shared between three or more parties. For the case of three parties (a tripartite network), teleportation of a quantum state can occur between any pair, but only with the assistance of the third party. Multipartite quantum protocols are expected to form fundamental components for larger-scale quantum communication and computation. Here we report the experimental realization of a tripartite quantum teleportation network for quantum states of continuous variables (electromagnetic field modes). We demonstrate teleportation of a coherent state between three different pairs in the network, unambiguously demonstrating its tripartite character.
- Subjects
QUANTUM theory; ELECTROMAGNETIC fields; MAGNETIC fields; FIELD theory (Physics); MAGNETICS; PHYSICS
- Publication
Nature, 2004, Vol 431, Issue 7007, p430
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/nature02858