Science
News: The use of quantum entanglement to transmit
information via quantum teleportation is a major area of
experimentation. Two experiments have presented major steps
forward in teleportation's potential usefulness. In the
first, Andreas Wallraff of ETH Zurich in Switzerland and
his colleagues have created a solid-state device that teleports
quantum information between entangled microwaves on a pair of
circuits. Changing the state of the signal on the first circuit
let them evaluate the second signal to determine the original
state of the first signal. The system's transmission rate is
nearly 10 000 events per second, with a very high success rate.
In the second experiment, Akira Furusawa of the University of
Tokyo and his colleagues showed a transmission success rate
nearly 50 times higher than current teleportation systems.
Teleportation without noticeable loss of signal and the ability
to manufacture solid-state, computer-chip-like components
capable of teleportation will be necessary for the development
of quantum computers and communications.
