INSTITUTE OF APPLIED PHYSICS - Beam it up! – Teleportation of Information

Beam it up! – Teleportation of Information

Since the 60s, teleportation is the great dream not only among physicists, but also by every once who has seen Star Trek.
The so-called quantum teleportation has been known for some years. The point is that elementary particles like electrons or photons can be in different places at the same time with a certain probability, as they exist per se in a spatially delimited state. Within such an over a plurality of locations distributed system, information can be transferred from one place to another without any loss of time.
However, the research team led by Alexander Szameit has been demonstrated now experimentally for the first time that the concept of teleportation not only last in the world of tiny quantum particles, but also in our classical world, published in "Laser & Photonics Reviews" (DOI: 10.1002 / lpor.201500252).
For this purpose, the colleagues used a particular form of laser beams. "Similar to the physical conditions in an elementary particle, the properties of light beams can be entangled to each other," explains Marco Ornigotti. "Entanglement" refers to a type of coding, in which the information to be transmitted is linked with a particular property of the light.
In this specific case, the physicists have information encoded in a particular direction of polarization of the laser light and transmitted them via teleportation on the shape of the laser beam. "In this form of teleportation, however, we can not skip any distance," restricts Alex Szameit, "on the contrary: the classical teleportation only works locally." But just as in quantum teleportation, the information is transmitted completely and immediately, without any loss of time. This fact makes such a transfer of information highly interesting for potential applications such as the telecommunications, as Szameit underlines.

More than simply fans: Marco Ornigotti (left) and Alexander Szameit (right). (Foto: Jan-Peter Kasper/FSU)

Diego Guzman-Silva et al. Demonstration of local teleportation using classical entanglement, Laser Photonics Rev. 2016, DOI 10.1002/lpor.201500252

Jun.-Prof. Dr. Alexander Szameit, Dr. Marco Ornigotti
Phone.: 03641 / 947985, 03641 / 947990
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News from: 07.03.2016 11:28
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