Demonstration of Quantum Telecloning of Optical Coherent States
Satoshi Koike, Hiroki Takahashi, Hidehiro Yonezawa, Nobuyuki Takei, Samuel L. Braunstein, Takao Aoki, Akira Furusawa · Physical Review Letters · 2006
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.