Monday, September 15, 2014

First captured the sound of an atom – La Vanguardia

Madrid. (Europa Press) .- Researchers at Chalmers University of Technology have succeeded for the first time, capture the sound of an atom . Experts have explained that, manipulating the sound on the quantum level, new discoveries may be obtained for computation. The interaction between atoms and light is well known and has been widely studied in the field of quantum optics. However, achieving the same kind of interaction with sound waves has it been for researchers a great challenge.

“We have opened a new door in the quantum world to talk and listen to atoms”, has noted the lead author, Per Delsing. “Our long-term goal is to harness quantum physics to benefit from its laws, for example on very fast computers. We do this by making electrical circuits that obey quantum laws, we can control and study,” he added.

For this trabjo, which has been published in Science , the scientists created a who, like the actual artificial atom can be loaded with energy emitted later in particle form. This is generally a particle of light, but the atom Chalmers experiment is designed to emit and absorb energy as sound. Thus, the atom size of 0.01 mm, was placed in a lateral of a superconducting material. Then they went acoustic waves on the surface of the material, reflected the oscillations of the atom and recorded the result with a tiny microphone. “We detected the weakest sound that can capture,” stated one of the study leaders, Martin Gustafsson. In this regard, he explained that when an atom is handled, it creates a sound, “a phonon every time.”

The sound is so weak that the researchers could not even hear it, just pick your waves similar to those used today in quantum computers circuits.

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