The Quantum Computer Is Getting Closer As Scientists Transferred Quantum Information Using Vibrations


Thanks to quantum physics we already have new types of sensors and ways to securely transmit data but scientists aim to higher goals such as a viable quantum machine or quantum computer. In this journey, there is a big challenge that has to be overcome, namely, discovering a correct way of coupling and controlling quantum system, as reports. However, scientists from the TU Wien and Harvard University made a breakthrough in transferring quantum information using sound.

“We are testing tiny diamonds with built-in silicon atoms, these quantum systems are particularly promising. Normally, diamonds are made exclusively of carbon, but adding silicon atoms in certain places creates defects in the crystal lattice where quantum information can be stored,” explained Peter Rabl, researcher and professor at the TU Wien.

Scientists transferred quantum information using vibrations, paving the way to a viable quantum computer

In a joint study, TU Wien and Harvard University’s scientists have come up with a new method to obtain the needed pairing of the quanta within diamonds. More specifically, they can be constructed in the form of a microscopical diamond stick of only several micrometers long. Then, this microscopical stick can be forced to vibrate in such low-frequency vibrations that they can only be argued by quantum theories.

“Light is made from photons, the quantum of light. In the same way, mechanical vibrations or sound waves can also be described in a quantum mechanical manner. They are composed of phonons, the smallest possible units of mechanical vibration,” said Peter Rabl.

Those small vibrations helped silicon atoms of this tiny quantum machine to bind to each other in a quantum-mechanical manner.

“There are many ideas for quantum systems that, in principle, can be used for technological applications. The biggest problem is that it is very difficult to connect enough of them to be able to carry out complicated computing operations,” said Rabl but the breakthrough the scientists made in using phonons to transfer quantum information in a stable manner could open new roads to a viable quantum computer.


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