Fujitsu and RIKEN develop superconducting quantum computers for hybrid computing - The EE

Fujitsu and RIKEN develop superconducting quantum computers for hybrid computing

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Fujitsu and RIKEN have announced the development of a new 64-qubit superconducting quantum computer at the RIKEN RQC-Fujitsu Collaboration Centre. The new quantum computer leverages the technology developed by RIKEN and a consortium of joint research partners including Fujitsu, for quantum computers, which was first revealed to the public in March this year.

The 64 qubit superconducting quantum computer utilised in the new hybrid quantum computing platform leverages superconducting quantum computer technology announced by RIKEN in March, as part of the Japanese Ministry of Education, Culture, Sports, Science and Technology’s Quantum Leap Flagship Program (MEXT Q-LEAP). The technology has been developed at the RIKEN RQC-Fujitsu Collaboration Center in cooperation with Nippon Telegraph and Telephone Corporation (NTT).

The computer uses a vertical wiring scheme similar to that of RIKEN’s quantum computer, making it scalable for future expansion. It further leverages qubit control software built by NTT to achieve high-precision control of qubits.

The superconducting quantum computer enables calculations of ideally up to 2 64 quantum superposition and entanglement states, which is expected to enable calculations on a scale that has been difficult to achieve with classical computers.

Accompanying this announcement, Fujitsu and RIKEN further revealed the launch of a platform for hybrid quantum computing, which combines the computing power of the newly developed 64 qubit superconducting quantum computer with 40 qubit quantum computer simulators developed by Fujitsu. Fujitsu and RIKEN provide the new platform to companies and research institutions that are conducting joint research with Fujitsu and RIKEN from October 5, 2023.

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.

Fujitsu and RIKEN are further developing a hybrid quantum algorithm 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 been able to develop a hybrid quantum algorithm that enables quantum chemistry calculations with better accuracy than conventional algorithms (CCSD(T)). The two partners plan to include this algorithm in the new platform.

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

Fujitsu and RIKEN will further provide quantum computing and quantum simulation resources to customers for applications in various fields, including finance and drug discovery, through this platform. They will also promote R&D activities for quantum applications through joint research to accelerate the practical application of both quantum computing hardware and software.

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