Russian scientists have joined the race for a quantum computer

Following the publication of this blog news of a qubit in the comments raised the question — what is this such a thing and how it’s so cool? Here’s an article appeared in time to "Rossiyskaya Gazeta", get acquainted!

The bill goes to infinity

Russian scientists have developed a superconducting qubit — the basic element of storage and processing of quantum information. This achievement puts Russia as full participants in the direction of world science breakthrough that opens a new era in computer science.

Quantum computers have long been at the hearing. Almost like the Large Hadron Collider. And it is clear why. He is able to conduct calculations hundreds of times faster than today’s most powerful machines. This opens up a fantastic opportunity, for example, in cryptography. Today, even the most powerful computers, with their quadrillion operations per second, is not able to "split" a regular credit card: expand the number of digits in the hundreds on two simple factors. To solve this problem, the car will take longer than the age of the universe (15 billion years). 

A quantum computer is a task quite tough. So, anyway, according to the theory. Generally, he promises breakthroughs in various fields. For example, is nearly 100 percent accuracy to predict the weather for the months ahead. Today, this term — 2-3 days. In short, it is small: do these amazing "scores." The problem is so tempting that the leading countries choose to give it a huge amount. But also incredibly complex. Involved in this race, and Russia. A group of scientists at the National Research Technological University "MISA" and the Russian Quantum Centre, led by Professor Alexei Ustinov created and tested a superconducting qubit — the heart of a quantum computer.

— This is the basic element of storage and processing of quantum information — explains Ustinov. — If conventional silicon transistor is presented in two versions — 0 and 1, the qubit their number is almost infinite. Hence the fantastic opportunities of a quantum computer.

At first glance, this qubit, there is nothing special — a small flat aluminum ring. The trick is visible only in the strongest microscope: a ring made breaks 2-3 nanometers wide. But that’s not all. In the normal state of a qubit little was capable of. It turns into a mathematical genius, it must translate into a quantum state. How? First of all, make superconducting, cooled to almost absolute zero. However, the qubits are "live" in the quantum world, only a microsecond, and then rush to get back to normal "mediocre" condition. But for that moment, a qubit has time to count hundreds of operations. The task of scientists is clear: we must again and again to drive the qubit in a quantum world, making the scoring in the super-fast mode.

— We succeeded, first, to make a qubit-survivor, "age" of about a microsecond, and secondly, to see its quantum state — says Alexei Ustinov. This result puts Russia with the world leaders who lead the development of quantum computers. The studies were conducted in the laboratory, which was created in NUST "MISA" member of the Scientific Council of the Russian Quantum Center and professor of the University of Technology in Karlsruhe, Germany, Alexey Ustinov. He won megagrant of five million dollars in the contest announced the Ministry of Education. The new lab is now equipped with the latest equipment, making it possible to conduct unique experiments.

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