The fans of ‘Harry Potter’ may find it easier to relate to the concepts of teleportation than most of the other people. In the Harry Potter terminology, teleportation is likened to the ‘port key’ medium of travel. For that matter even movie buffs, who have watched ‘Matrix’ will be able to relate to teleportation. Teleportation is the name given by science fiction writers to the feat of making an object or person disintegrate in one place while a perfect replica appears somewhere else.
Till late the exact theoretical process of teleportation was not known. Of late however theories are beginning to surface based on extensive research. The general idea seems to be that the original object is scanned in such a way as to extract all the information from it, then this information is transmitted to the receiving location and used to construct the replica, not necessarily from the actual material of the original, but perhaps from atoms of the same kinds, arranged in exactly the same pattern as the original. The only hitch is that in the experiments demonstrated so far the original copy has to be destroyed.
In science fiction stories like in ‘Matrix’ and the likes of it, there is generally a complex plot created by allowing both the original and the replicated copy to exist and then they are made to meet each other thus creating confusion onscreen. Thankfully science has so far proved that such a thing is not really possible. For that matter even human teleportation is a distant dream. What has been achieved so far is the transportation of single atoms. In 1993 an international group of six scientists, including IBM Fellow Charles H. Bennett, confirmed the intuitions of the majority of science fiction writers by showing that perfect teleportation is indeed possible in principle, but only if the original is destroyed.
... instantly places this film into the science fiction category. Another example of science fiction, and one that proves science-fiction's elusive nature, is Tarzan ... going to give a definition of what I think science fiction is.Science fiction (adj.) [sy-ens fik-shun]: o Some ... course, if we limit the term science fiction to a clear-cut definition, will science fiction have such wonderful stories as it ...
Until recently, teleportation was not taken seriously by scientists, because it was thought to violate the uncertainty principle of quantum mechanics, which forbids any measuring or scanning process from extracting all the information in an atom or other object. According to the uncertainty principle, the more accurately an object is scanned, the more it is disturbed by the scanning process, until one reaches a point where the object’s original state has been completely disrupted, still without having extracted enough information to make a perfect replica.
But the six scientists found a way to make an end-run around this logic, using a celebrated and paradoxical feature of quantum mechanics known as the Einstein-Podolsky-Rosen effect. In brief, they found a way to scan out part of the information from an object ‘A’, which one wishes to teleport, while causing the remaining, unscanned, part of the information to pass, via the Einstein-Podolsky-Rosen effect, into another object ‘C’, which has never been in contact with ‘A’. Later, by applying to ‘C’ a treatment depending on the scanned-out information, it is possible to maneuver ‘C’ into exactly the same state as ‘A’ was in before it was scanned. A itself is no longer in that state, having been thoroughly disrupted by the scanning, so what has been achieved is teleportation, not replication.
The unscanned part of the information is conveyed from A to C by an intermediary object B, which interacts first with C and then with A. In order to convey something from A to C, the delivery vehicle must visit A before C. But there is a subtle, unscannable kind of information that, unlike any material cargo, and even unlike ordinary information, can indeed be delivered in such a backward fashion. This subtle kind of information, also called “Einstein-Podolsky-Rosen (EPR) correlation” or “entanglement”, has been at least partly understood since the 1930s when Albert Einstein, Boris Podolsky, and Nathan Rosen discussed it in a famous paper.
... sociology, “information systems” are systems whose behavior is ... data contains, but is not limited to, literary information. Information systems, due to their complexity, are usually built ... an “information system” is a basic knowledge-representation matrix comprised of attributes (columns) and objects (rows). In ...
In the 1960s John Bell showed that a pair of entangled particles, which were once in contact but later move too far apart to interact directly, can exhibit individually random behavior that is too strongly correlated to be explained by classical statistics. Another well-known fact about EPR correlations is that they cannot by themselves deliver a meaningful and controllable message. But now it has been proved that through the phenomenon of quantum teleportation, they can deliver exactly that part of the information in an object, which is too delicate to be scanned out and delivered by conventional methods.
In 1998, physicists at the California Institute of Technology (Caltech), along with two European groups, turned the IBM ideas into reality by successfully teleporting a photon, a particle of energy that carries light. In performing the experiment, the Caltech group was able to get around the Heisenberg Uncertainty Principle, the main barrier for teleportation of objects larger than a photon. This principle states that you cannot simultaneously know the location and the speed of a particle.
In order to teleport a photon without violating the Heisenberg Principle, the Caltech physicists used a phenomenon known as entanglement. Though this phenomenon has been known for a long time it is just in recent years that it has been understood in depth. In entanglement, at least three photons are needed to achieve quantum teleportation:
•Photon A: The photon to be teleported
•Photon B: The transporting photon
•Photon C: The photon that is entangled with photon B
If researchers tried to look too closely at photon ‘A’ without entanglement, they would bump it, and thereby change it. By entangling photons ‘B’ and ‘C’, researchers can extract some information about photon ‘A’, and the remaining information would be passed on to ‘B’ by way of entanglement, and then on to photon ‘C’. When researchers apply the information from photon ‘A’ to photon ‘C’, they can create an exact replica of photon ‘A’. However, photon ‘A’ no longer exists as it did before the information was sent to photon ‘C’.
... opportunities by using: value chains, application searching and information analysis (Earl 1989). Business strategy frameworks; assess strategic ... such as increasing economic return, then the proposed information system should concentrate on efficiency measures such as ... set" (Williams 1997). Second, analysing information requirements, this analyses the information needs of the relevant areas of the ...
While the idea of creating replicas of objects and destroying the originals doesn’t sound too inviting for humans, quantum teleportation does hold promise for quantum computing. These experiments with photons are important in developing networks that can distribute quantum information. Professor Samuel Braunstein, of the University of Wales, Bangor, called such a network a “quantum Internet.” This technology may be used one day to build a quantum computer that has data transmission rates many times faster than today’s most powerful computers. Add to this its appeal of filmmakers and we can safely expect a couple of films more on similar themes. Only now you will know exactly what they are talking about and how far from truth they are.