It's been proven that even atoms emit sound when excited.

Experiments carried out at Sweden's Chalmer University of Technology saw scientists guide waves of sound along the surface of the metal, bouncing sound off the atom in the process.

The sound emitted was then recorded on a tiny microphone located at the other end of the metal material.

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While the scientists weren't able to hear the sound themselves, they were able to record the sound waves it made.

The sound they recorded was a "D" note. It was 20 octaves higher than the highest possible note on a grand piano. The pitch was much higher than sounds the human ear can detect.

The co-director of the University of Maryland's Joint Quantum Institute said this experiment is a great step in quantum computing.

The accepted belief is that whenever something moves, it emits a sound. Scientists have proved that even small atoms are included in this statement.

Since it would be hard to make a real atom move, scientists created an artificial one for the purpose of their experiments. The atom was 0.01 meters small and was placed on a superconducting metal.

Afterwards, they charged the atom with a different energy. Naturally, the energy the atom released came in the form of light, or photons. Scientists manipulated the atom to receive and emit sound energy, or phonons, instead. 

Light is a fixture in quantum experiments. Light moves so fast scientists don't have the time to manipulate it.

The artificial atom presented the opportunity for sound to be used, instead. It allowed ample time for scientists to modify the sound for their own purposes. 

The results of the experiment were published online in the journal, Science Express.

TagsScience Express, Sound of an atom, D-note, Quantum computing