MIPT: Quantum integrated circuit

Main articles:

• Quantum Computer and Quantum Communication
• Quantum computers in Russia

2021: Creation of a quantum integrated circuit based on five superconducting qubits

A quantum systems MIPT quantum integrated circuit based on five superconductors has been created in the artificial laboratory. qubits This was announced by MIPT on March 31, 2021. It is an important step towards the creation of full-scale universal quantum processors and simulators. This fully controlled multi-bit quantum circuit can be considered a prototype quantum processor.

The device as early as March 2021 can be used in quantum machine learning - the field of science at the intersection of quantum physics and data processing. Quantum systems can accelerate calculations and reduce the number of parameters in the neural network. Thanks to this, quantum neural networks become more expressive and allow you to describe the problem with a smaller number of parameters. The system will also help in the study of approaches to the creation of quantum simulators that serve to controlled imitation of the behavior of natural systems that are not amenable to classical calculations.

Leading world scientific centers are working on the creation of a universal quantum computer capable of solving any traditimatized problem. However, it is likely that it is quantum simulators for machine learning that will allow commercialization of the technology in the very near future and bring the moment of emergence of universal devices closer.

The integrated circuit was developed in the laboratory of artificial quantum systems MIPT and manufactured on the technological basis of the Center for Collective Use of the Moscow Fiztekh. The first measurements showed that all elements of the diagram work with the expected parameters. As of March 2021, MIPT has a special opportunity to independently develop, manufacture and test quantum devices.

Шаблон:Quote 'author = commented one of the scheme developers - researcher at the Laboratory of Artificial Quantum Systems MIPT Alexey Bolgar.

This achievement was made possible by several key facts. Firstly, the employees of the Center for Collective Use of the university and the laboratory technologists managed to significantly improve the control of geometric and electrical parameters of tunnel contacts. These contacts are the "heart" of superconducting qubits, the performance of the entire quantum circuit depends on the quality and reproducibility of their manufacture.

Secondly, the technology for the manufacture of microwave resonators was debugged, the quality of which in single-photon mode is hundreds of thousands. Such high-capacity resonators are an integral part of the quantum integrated circuit - they are located on a chip near qubits and serve to read their quantum state.

The third important milestone in the formation of technology was the debugging of the process of making hinged bridges - the so-called air bridges, which allow you to suppress parasitic resonance modes and thereby increase the quality of structures.

Finally, the fourth and perhaps most important component of success is the experience gained by employees of the MIPT technology center and the laboratory of artificial quantum systems in recent years. A coordinated team of talented and enthusiastic researchers was formed here. And, by the way, it continues to be replenished, because the student training system at MIPT allows talented people to perform research directly in scientific laboratories.

Our current results suggest that the technological and measuring capabilities of the CCC and our laboratory allow us to work out and perform all the stages necessary to create elements of quantum processors, from technological drawings to the integrated quantum circuit on a chip and its measurements. However, further development of the work on the creation of controlled elements of the quantum computer and the computer itself will require the modernization of the "clean zone" of the Central Control Committee and the additional equipment of the laboratory with modern research equipment, adds Alexey Bolgar.