Osaka University 64-Qubit System

Osaka University 64-Qubit System is a superconducting circuits quantum computer operated by Osaka University in Japan. It has 64 physical qubits. It ranks 27 of 53 superconducting machines in this table by physical qubit count. 3 sourced specs are in the spec sheet. No benchmark figures are recorded for it yet.

Also known as Osaka University QIQB superconducting quantum computer, Japan third domestic quantum computer

Announced on 20 December 2023 by a consortium of Osaka University, RIKEN, NICT, AWS, Fujitsu, NTT and others, with cloud access for users in Japan from 22 December 2023. It uses the same chip design as RIKEN's first superconducting quantum computer and more domestically made components than earlier machines, except the refrigerator. No fidelity or coherence figures are published in the release, and no later status update was found.

Spec sheet

Technical details as the builder or a paper states them, each with its own source. A blank is a fact we could not source, not a zero. Fidelity and coherence figures are in the benchmark table below.

Spec	Value	Basis	Note	Source
Processor	64-qubit chip provided by RIKEN	Vendor reported	NTT says it uses the same design as the chip in RIKEN's first superconducting quantum computer.	group.ntt
Fabrication	More domestically manufactured components than earlier systems, excluding the refrigerator	Vendor reported	Used as a test bed for Japan-made components.	group.ntt
Access and pricing	Cloud access for users in Japan from 22 December 2023 via a joint research consortium	Vendor reported	The consortium includes Osaka University, RIKEN, NICT, AWS, Fujitsu, NTT and others.	group.ntt

Timeline

2023-12-20: Announced
2023-12-22: First operational
2023-12-22: Status checked: operational

Comparable superconducting machines

Closest in physical qubit count within the same technology. Counts of different qubit types are not interchangeable across technologies.

Machine	Operator	Qubits	Status
G-QuAT System F	AIST	64	operational
RIKEN 64-Qubit System	RIKEN	64	operational
Origin Wukong	Origin Quantum	72	operational
Euro-Q-Exa	LRZ	54	operational
IQM Emerald	IQM Quantum Computers	54	operational
IQM Radiance NOX at CINECA	CINECA	54	operational