Two physicists at the University of Konstanz are developing a method that could enable the stable exchange of information in quantum computers. In the leading role: photons that make quantum bits "fly."
Quantum computers are considered the next big evolutionary step in information technology.
They are expected to solve computing problems that today's computers simply cannot solve -- or would take ages to do so. Research groups around the world are working on making the quantum computer a reality.
This is anything but easy, because the basic components of such a computer, the quantum bits or qubits, are extremely fragile.
One type of qubits consists of the intrinsic angular momentum (spin) of a single electron, i.e. they are at the scale of an atom.
It is hard enough to keep such a fragile system intact. It is even more difficult to interconnect two or more of these qubits.
So how can a stable exchange of information between qubits be achieved?
Flying qubits
The two Konstanz physicists Benedikt Tissot and Guido Burkard have now developed a theoretical model of how the information exchange between qubits could succeed by using photons as a "means of transport" for quantum information.
sources:science daily
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