Scientists from the University of the New South Wales (Australia) managed to force the atoms in silicon to “communicate” with each other at a distance, using electrons as peculiar couriers. The results are published in the journal Science.

We are talking about quantum confusion – a phenomenon in which two particles behave as if they are connected by an invisible thread, even being far from each other. Plassum is the main trump card of future quantum computers, the very ones from which the coup in computing equipment is waiting for.

The team under the leadership of Professor Andrea llo relied on silicon and phosphorus atoms, introduced into the crystal. For storage of information, the spin of atomic nuclei was used – one of the most “clean” and stable quantum states known in the hard body. The only problem is that these conditions are so isolated that it was extremely difficult to connect them among themselves.

“We have shown that you can force such nuclear backs to come into contact, and did it on a scale that are familiar to the production of ordinary chips,” explains Dr. Holly Stamp, who is now working at the Massachusetts Technological Institute.

Holly compares them with people:

Previously, the nuclear nuclei looked like people in a hermetically sealed room – they could talk with each other, but did not hear the neighbors. Now they were given “phones” – electrons. These electrons are able to stretch in space and “reach” to different nuclei, allowing them to exchange quantum states.

The experimenters have achieved that the nuclei, divided by about 20 nanometers, began to “talk”. In a human way, as if two people stood at a distance from Sydney to Boston. At the same time, it is on a scale of 20 nanometers that transistors in smartphones and computers are made today. That is, the new technology is originally compatible with the giant industrial industry.

Over the past and a half years, the rello group step by step showed that atoms in silicon can store information for tens of seconds and perform logical operations with a minimum error. But they rested on one problem – how to connect isolated nuclei to a large network. A breakthrough with “electronic phones” removes this restriction and opens the path to scaling.

“We used only two electrons, but in the future they can be used more and give them the desired shape to bind the nuclei at different distances,” says Professor ello.

“Electrons are easy to control, they can be quickly moved and turned on and off the interaction. This is exactly what an industrial -level quantum processor requires. ”

The chip itself was made with the help of oversonal silicon provided by colleagues from the University of Kayo in Japan, and the phosphorus atoms were introduced by the team of Professor David Jamison from the University of Melbourne.

As a result, the researchers showed that the most reliable and stable quantum element – the atomic nucleus – can be built into the architecture, which works on the same scale as the usual silicon schemes. So, the trillion industry of semiconductors receives a chance to become the basis for real quantum computers.

As Dr. Stamp emphasized:

“The main thing here is not even the very fact of confusion, but that which managed to“ force the atoms to speak ”on a scale where traditional electronics has long been working. This makes the path to practical quantum microchips much more real than several years ago. “

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