15 August 2013

Teleportation chip - Quantum communication

Aug. 14, 2013 — ETH-researchers - have managed to teleport information from A to B -- for the first time in an electronic circuit, similar to a computer chip.

Physicists at ETH Zurich have for the first time successfully teleported information in a so-called solid state system. The researchers did it by using a device similar to a conventional computer chip. The essential difference to a usual computer chip is that the information is not stored and processed based on the laws of classical physics, but on those of quantum physics.

Quantum teleportation does not transport the information carrier itself, but only the information. "Quantum teleportation is comparable to beaming as shown in the science fiction series Star Trek," says Wallraff. "The information does not travel from point A to point B. Instead, it appears at point B and disappears at point A, when read out at point B." 

In this system approximately 10,000 quantum bits can be teleported per second.

In a next step, the researchers plan to increase the distance between sender and receiver in their device. The scientists say, they will try to teleport information from one chip to another. And in the long term the goal will be to explore whether quantum communication can be realised over longer distances with electronic circuits, more comparable to those achieved today with optical systems.

Compared to today's information and communication technologies, which are based on classical physics, quantum information processing has the advantage that the information density is much higher: In quantum bits more information can be stored and more efficiently processed than in classical bits.

Source: ScienceDaily

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