Researchers dream of quantum computers. Incredibly fast super computers which can solve such extremely complicated tasks that it will revolutionise the application possibilities. But there are some serious difficulties. One of them is the transistors, which are the systems that process the signals.
Today the signal is an electrical current. For a quantum computer the signal can be an optical one, and it works using a single photon which is the smallest component of light.
"To work, the photons have to meet and "talk", and the photons very rarely interact together" says Anders Søndberg Sørensen who is a Quantum Physicist at the Niels Bohr Institute at Copenhagen University. He explains that light does not function like in Star Wars, where the people fight with light sabres and can cross swords with the light. That is pure fiction and can't happen. When two rays of light meet and cross, the two lights go right through each other. That is called linear optics.
What he wants to do with the light is non-linear optics. That means that the photons in the light collide with each other and can affect each other. This is very difficult to do in practice. Photons are so small that one could never hit one with the other. Unless one can control them -- and it is this Anders Sørensen has developed a theory about.
Today the signal is an electrical current. For a quantum computer the signal can be an optical one, and it works using a single photon which is the smallest component of light.
"To work, the photons have to meet and "talk", and the photons very rarely interact together" says Anders Søndberg Sørensen who is a Quantum Physicist at the Niels Bohr Institute at Copenhagen University. He explains that light does not function like in Star Wars, where the people fight with light sabres and can cross swords with the light. That is pure fiction and can't happen. When two rays of light meet and cross, the two lights go right through each other. That is called linear optics.
What he wants to do with the light is non-linear optics. That means that the photons in the light collide with each other and can affect each other. This is very difficult to do in practice. Photons are so small that one could never hit one with the other. Unless one can control them -- and it is this Anders Sørensen has developed a theory about.
The submissive power of the photon does not allow it interact with other photons.The process by which a photo can be made to interact with the other is by the use of nano wires.
Nano wires being smaller than the optic fibre can be used effectively for this purpose.
1. the red photon can be made to enter the nano wire from one end and green photon from other end.
2. An atom of a heavy element can behave as a force provider the divert the photos from their respective paths.
3.On collision, the photon with with a larger phase will be able to carry some energy of the other photon (i.e. the green one in the example carries the energy of the red photon). this is the principle of signal processing revisited .
This idea was concieved at the Copenhagen University and is currently being researched at many universities including Harvard.
(ref: IEEE Spectrum July 2008;
Detailed work by Anders Sørensen)
Your ideas are welcome on this topic & plz post any new innovations in the industry.
2 comments:
IEEE spectrum gives plenty of thought for the intellect and is the subject of one of my posts as well. i suggest you also post links to wikipedia for the lesser fortunate readers to look up certain words in the dictionary
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