Scientists from Russia and Canada have found a way to simplify the architecture of quantum computers

Quantum computers are capable of producing very complex computations thanks to a unique architecture, but, despite the fact that they are behind the future, an extremely complicated device of quantum computers does not allow creating a sufficiently powerful system. But according to an article recently published in the journal Nature, a group of physicists from Russia and Canada managed to create and manipulate the first silicon chip capable of storing and storing multidimensional qubits. A new approach will simplify the architecture of quantum computers and accelerate their creation.

Recall that qubits in quantum computers perform both the memory cell function and the function of the computational module. They can store both zero and unit, thanks to the laws of quantum physics. Combining several qubits allows you to quickly solve complex and extremely resource-consuming tasks. As told in an interview with RIA Novosti, one of the leading scientists of the Russian quantum center, Alexei Ustinov,

"Physicists quickly learned how to make single qubits, able to live long enough to perform calculations. However, attempts to combine several qubits face great difficulties due to the fact that it is not as easy to record and read data from them as it originally seemed. "

Therefore, many scientists try not to unite the qubits into a single network, but try to contain as many quantum information cells as possible into one qubit. A group of scientists from the Russian Federation and Canada, led by professor of ITMO University Roberto Morandotti, managed to create a chip that allows "compacting" almost unlimited quantity of quantum data in pairs of entangled photons.

The new development is a microresonator - a hollow silicon ring, inside which light will move in a circle, reflected from the walls. The chip can be constructed in such a way that certain pulses will be amplified, while others will be extinguished, which makes it possible to obtain laser pulses with a "comb" spectrum, which is convenient for encoding individual memory cells. Thanks to this approach, the number of values ​​encoded in such a light qubit will depend only on how accurately the devices can detect these changes in light.

"By combining the generation of multidimensional entangled photons on one chip with their ultrafast processing, we showed that quantum systems can be controlled by standard telecommunication elements such as modulators and frequency filters. This will simplify the development and diffusion of technology. "

It is based on the materials of RIA Novosti

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