Scientists promise a quick change of the electronic quantum computers

April 27, 2012 15:04

Company Dell recently introduced three new high XPS system, including XPS 700. Not a single bad word about Dell, we have to admit that none of these models are not nearly comparable to even the weakest quantum computer.

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Fans of technology, investors, IT manufacturers and researchers of all kinds to look forward to, when the science of quantum computing finally created most applicable technology. Physics Institute of the Max Planck Quantum Optics (MPQ) Recently published research, which, in their opinion, made this important day is much closer.

For many years, physicists have dreamed up an information network, far exceeding current, using quantum technology. A team of German researchers were able to construct the first major component of the network: the channel between two atomic nodes through which information can be obtained, transmitted, and stored by a single photon. The successful exchange of information has recently been implemented in Garshinge, Germany, between the two laboratories MPQ, shestidesyatimetrovym connected fiber optic cable.

Despite the fact that this is still just a prototype, this rudimentary channel can be scaled in a more powerful and separated network. The team published the results of their study in the journal Nature.

The idea of quantum computing was first proposed by physicist Richard Feynman in 1982. Its essence lies in the fact that the most important element of classical computing, bit binary. Like a light switch, it is either on or off, that is, is either a one or zero. Quantum bit in contrast, can be a unit, zero, or a combination of the two states — a state roughly similar to the condition thrown coins, which is still spinning in the air.

The usefulness of the three-state at first glance seems rather dubious than real, but in fact, it creates an opportunity for a new presentation. While trillion classical bits can contain only 243discrete values of "zero-unit", only 200 quantum bits (or qubits) can contain at least 2200discrete values. This new information capacity will enable future computers to perform calculations with almost unimaginable speed, and solve the problems that are currently intractable. The list of technological applications of quantum computers is too great to give, and this is one reason for the excitement in everything that concerns the sphere.

Moreover, it is experiencing an unprecedented surge of excitement over the past five years. Quantum computing have been theoretically developed thirty years ago, and many physicists have since been engaged in research and providing new quantum algorithms, new media (such as eg diamonds), cryptographic techniques, unique logic circuits, and many other applications of quantum technology. And all this for the computer, which is still not even exist.

But recent developments make us think that the appearance of such a computer is closer than many thought. This was the key moments of a recent article published in the New York Times, which talks about the new improvements that have been made in the IBM system of quantum computing — specifically, IBM researchers were able to calculate the speed and increase the lifespan of individual qubits, which tend to be volatile. This is usually a good sign for the innovative technology, when a research wing of a large technology company, which tends to be very conservative in their investment of time and resources, expressed optimism about the use of this particular technology.

MPQ team also managed to develop, perhaps one of the most important and flexible forms of this technology. It includes two separate rubidium atom as a node information network. Qubit of information, stored as a single quantum state of the atoms, can be passed through the emitted photon — which carries one bit of information — and is absorbed by another atom of rubidium. With a twisted optical fiber data can be transmitted, received and stored. On top of that, the process is completely reversible.

Send, read, write, save. Key features of network computing can now be demonstrated on a system of only two atoms.

To increase the chances of interaction between photons and atoms of rubidium, which usually happens rarely, physicists have developed special "optical cavities," the system of mirror pockets, which direct and redirect the photons through the rubidium.

This experiment also demonstrates the capabilities of one of the truly amazing things out of the scope of the quantum calculus: pairing. Quantum coupling occurs when the particles interact at the physical level, there is a correlation between their quantum states, and then they separated. The result of this is that the manipulation or measurement (that at the quantum level is the same) with one quantum state to influence others. Because they "involve." For example, the measurement of the spin of a particle as a clockwise direction, spontaneously twists particle spin counterclockwise B, regardless of whether the particle B at a distance of six feet, six kilometers, or six light years. The distance between the two particles does not play any role. If this phenomenon seems confusing to you — you are not alone. Albert Einstein, who never quite took the capricious nature of quantum physics, once called this phenomenon "SpukhafteFernwirkung"Or" work of ghosts. "

One can not imagine the number of applications of the quantum computer, consisting of only a few hundred qubits, not to mention the possibilities of technology, growing phenomenon of quantum pairing — a concept that for many physicists still a mystery. MPQ team openly admits that their prototype could be significantly improved (current success rate for the transmission of quantum states of the system is 0.2 percent). But consider the progress made since 1982, when quantum computing were just an idea, not an elegant experiment to transfer data between two remote German laboratories.

Cowanchee, MixedNews

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