Nanotube vibration could act as data storage

Up to now, researchers have experimented primarily with electrically charged particles. Nanomechanical devices, however, are not charged and much less sensitive to electrical interference.

Using quantum mechanical phenomena, computers could be much more powerful than their digital predecessors and scientists are working to explore the basis for quantum computing.

To date most systems are based on electrically charged particles that are held in an electromagnetic trap.

A disadvantage of these systems is that they are very sensitive to electromagnetic interference and need extensive shielding.

Physicists at TUM have now found a way for information to be stored and quantum mechanically processed in mechanical vibrations.

According to TUM, a carbon nanotube that is clamped at both ends can be excited to oscillate.

‘One would expect that such a system would be strongly damped, and that the vibration would subside quickly,’ said Simon Rips, first author of a paper on the research published in Physical Review Letters. ‘In fact, the string vibrates more than a million times. The information is thus retained up to one second. That is long enough to work with.’