Demonstration of quantum telecloning of optical coherent states

Demonstration of quantum telecloning of optical coherent states

Koike, S., Takahashi, H., Yonezawa, H., Takei, N., Braunstein, S.L., Aoki, T. and Furusawa, F.
(2006): Physical Review Letters 96, 060504-1/4 (PDF)

ABSTRACT: We demonstrate unconditional telecloning for the first time. In particular, we symmetrically and unconditionally teleclone coherent states of light from one sender to two receivers, achieving a fidelity for each clone of F=0.58± 0.01, which surpasses the classical limit. This is a manipulation of a new type of multipartite entanglement whose nature is neither purely bipartite nor purely tripartite.