In 2023, a group of researchers from the joint laboratory of the Physical Institute. P. N. Lebedev RAS (FIAN) and the Russian Quantum Center (RCC), which includes Challenge Prize winner Ilya Semerikov, created a 20-qubit ion quantum computer. Today, researchers are modernizing it and launching quantum algorithms. Ilya Semerikov spoke about these works, as well as the group’s future plans.
Winner of the Challenge Prize Ilya Semerikov< br>
Winner of the Challenge Prize Ilya Semerikov
For the development of a 20-qubit computer using multi-level quantum systems — qudits — Ilya Semerikov received the Challenge Award in the Perspective category. There are only a few computing devices in the world that use Qudit architecture to perform universal quantum computing.
Today, the power of quantum computers in the world is limited mainly not by the number of qubits, but by the reliability of two-qubit operations. The reliability of the quantum computer of the Lebedev Physical Institute and the RCC is on average 95%.
“We now have different reliability of two-qubit operations on different pairs of ions: on the worst pair it is about 90%, on the best — about 97%. However, there is always some scatter in reliability, and the big question is how to accurately measure this, so for now I would call these results rather underestimated. On average, we now have about 95% reliability,” noted Ilya Semerikov.
To increase the reliability of the calculations, researchers from the Lebedev Physical Institute have already resolved a number of issues related to the phase purity of the laser, heating rates, and others. Ilya Semerikov noted that in the future there are two directions for the development of work on a universal ion quantum computer. The first is to create a 60-qubit 30-ion quantum computer with 99% reliability by 2030, the second is to work on increasing the number of qubits by creating 2.5-dimensional ion traps that will allow scaling to hundreds of ions.
Winner of the Challenge Prize Ilya Semerikov
Winner of the Challenge Prize Ilya Semerikov
“We have two directions of development. The first is to learn how to perform two-qubit operations with 10 ions with an accuracy of more than 99%. And the second is to increase the number of qubits. To achieve this, we plan to create 2.5-dimensional traps containing several regions of confinement of ion chains. In this case, scaling by hundreds of ions is already visible. It seems to me that this can be done in the next five years. Plus, some of our theorists also have original ideas on how to implement error correction codes, but I won’t spoil that,” commented Ilya Semerikov.
The national award in the field of future technologies “Challenge” was established and organized by the Foundation for the Development of Scientific and Cultural Relations “Challenge” together with Gazprombank. The partners of the award are the state corporation Rosatom and the Roscongress Foundation with the support of the Moscow government. The Challenge Prize is timed to coincide with the Decade of Science and Technology announced in 2022 and is designed to recognize breakthrough ideas and inventions that are changing the landscape of modern science and the lives of every person.
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