Unconditional quantum teleportation
Quantum teleportation of optical coherent states was demonstrated experimentally using squeezed-state entanglement. The quantum nature of the achieved teleportation was verified by the experimentally determined fidelity Fexp = 0.58 +/- 0.02, which describes the match between input and output states. A fidelity greater than 0.5 is not possible for coherent states without the use of entanglement. This is the first realization of unconditional quantum teleportation where every state entering the device is actually teleported.
A. Furusawa, C. A. Fuchs, and H. J. Kimble are in the Norman Bridge Laboratory of Physics, California Institute of Technology, Pasadena, CA 91125, USA. J. L. Sorensen and E. S. Polzik are at the Institute of Physics and Astronomy, Aarhus University, A.
A
Furusawa
JL
Sorensen
SL
Braunstein
CA
Fuchs
HJ
Kimble
ES
Polzik