The average accuracy of single-qubit operations was 99.76%, two-qubit operations — 99.11%, and readout accuracy — 96.18%. The high-precision superconducting quantum processor was launched at the Functional Micro/Nanosystems REC (REC FMN) — a joint center of Bauman Moscow State Technical University and FSUE "RFNC-VNIIA named after N.L. Dukhov".
According to the university, the four-qubit superconducting quantum processor Snowdrop 4Q demonstrated for the first time the accuracy of logical operations exceeding 99.11%.
This indicator became a record for Russian multi-qubit systems in the implementation of a number of complex quantum algorithms. The created quantum computer includes dozens of components, including a quantum processor chip, a readout system with parametric cryoamplifiers, control electronics units, and in-house developed microwave modules. The processor architecture is based on frequency-tunable transmon qubits with controlled coupling between qubits. The chips of the quantum element component base are manufactured using the serial technology of REC FMN.
With the help of Snowdrop 4Q, scientists simulated the magnetization of a chain of spins (Ising model in a transverse field), solved the heat equation, and implemented an algorithm for solving systems of linear equations. Work on the creation of superconducting quantum processors and quantum algorithms is carried out within the framework of the "Priority 2030" program and a joint project with the Foundation for Advanced Research.
We have achieved a landmark result that we have been working towards for almost three years — from the development of an effective quantum algorithm to its launch on quantum 'hardware'. We have made sure that our approach works, and, moreover, paves the way for the creation of a practically useful computer. The plans include further improvement of already serial technologies for the manufacture of quantum devices and an increase in the number of qubits with increased accuracy of quantum operations.
Earlier it became known that on the basis of Bauman Moscow State Technical University, they plan to launch the production of superconducting quantum processors for supercomputers. The first contract manufacturing of superconducting quantum processors on 100-mm wafers in Russia will be implemented jointly with FSUE RFNC-VNIIA named after N. L. Dukhov.
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