Demonstration of quantum telecloning of optical coherent states.
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.
Koike
Satoshi
S
Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Takahashi
Hiroki
H
Yonezawa
Hidehiro
H
Takei
Nobuyuki
N
Braunstein
Samuel L
SL
Aoki
Takao
T
Furusawa
Akira
A