Fujitsu, RIKEN unveil new 64-qubit quantum computer in Japan – Inside Quantum Technology

Fujitsu and RIKEN late last week announced that they had developed a new 64-qubit superconducting quantum computer at the RIKEN RQC-Fujitsu Collaboration Center in Wako City, Saitama, Japan

In addition to an integrated 64-qubit chip, the new computer uses a vertical wiring scheme similar to that of RIKEN’s earlier quantum computer which was unveiled last March. This will help make it scalable for future expansion, the partner said. The new computer also leverages qubit control software built by NTT to achieve high-precision control of qubits. The new machine enables calculations of ideally up to 2 64 quantum superposition and entanglement states, which is expected to enable calculations on a scale that have been difficult to achieve with classical computers.

This is the latest step in a collaboration between the parties that has gone on for more than two-and-a-half years since they teamed up to launch a quantum computing R&D center in early 2021.

Also last week, Fujitsu and RIKEN unveiled a hybrid quantum computing that pairs the new, 64-qubit machine with a 40-qubit quantum computer simulator developed by Fujitsu. The platform is now available to companies and research institutions that are conducting joint research with Fujitsu and RIKEN.

The hybrid platform enables easy comparison of calculation results of noisy intermediate-scale quantum (NISQ) computers against error-free results from quantum simulators, contributing to accelerated research in areas including performance evaluation of error mitigation algorithms in quantum applications, the partners said. They added that they also are developing a hybrid quantum algorithm to be included in the new platform that links superconducting quantum computing with high-performance computing (HPC). By linking a quantum computer with a quantum simulator that runs on an HPC, Fujitsu and RIKEN have succeeded in developing a hybrid quantum algorithm that enables quantum chemistry calculations with greater accuracy than conventional algorithms, the partners said. 

Moving forward, Fujitsu and RIKEN will promote the development of technologies including high-density implementation to realize a 1,000 qubit superconducting quantum computer, as well as technologies to achieve more precise quantum gate operations.

Last week’s announcement included supportive comments from research partners of Fujitsu, including Yukihiro Okuno, Senior Research Scientist, Analysis Technology Center, Fujifilm Corporation, who stated,  “We anticipate that the ultrafast computing power of quantum computers enables unprecedented high-precision chemical calculations, which will greatly contribute to materials development. Fujifilm will leverage the new hybrid quantum computing platform to research the effects of noise on current quantum computing results. We will also continue to develop innovative materials through the application of quantum computing.”

Dan O’Shea has covered telecommunications and related topics including semiconductors, sensors, retail systems, digital payments and quantum computing/technology for over 25 years.

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• Source: https://www.insidequantumtechnology.com/news-archive/fujitsu-riken-unveil-new-64-qubit-quantum-computer-in-japan/