Fujitsu, Osaka University Reduce Quantum Error Impact

Researchers at Fujitsu and the Center for Quantum Information and Quantum Biology at Osaka University (QIQB) have developed error impact reduction methods that could achieve practical quantum computing sooner.

Reducing the effect of errors means quantum computers can run algorithms that solve real-world problems faster than classical computers with fewer qubits, bringing forward the timeline for practical quantum computing.

The Fujitsu and QIQB team calculated that one application, a material energy estimate, would work faster on a quantum computer than a classical computer using only 60,000 qubits using their methods.

This is significantly fewer than the amount typically estimated for fault-tolerant quantum computers and would take 10 hours to calculate, compared with an estimated five years using a classical computer.

According to the organizations, these results demonstrate that quantum advantage (quantum computers being able to solve problems faster than current classical computers) could be achieved as early as 2030.

An example is enabling quantum computers to carry out a larger-scale analysis of the Hubbard model which is used for developing high-temperature superconductors. This could improve the efficiency of electrical infrastructure and lead to innovations in material development and drug discovery.

Related:Fujitsu, ANU to Establish Quantum Research Facility in Australia

The two new technologies focus on space-time efficient analog rotation quantum computing architecture. One improves phase angle accuracy during phase rotation and the other automatically generates efficient qubit operation procedures.

The team developed a quantum circuit generator that streamlines the process for converting quantum logic gates into the physical gates that operate the qubits. They also used acceleration technology that minimizes computing time by dynamically changing the qubit operational procedures.