Japan has launched its first entirely homegrown quantum computer, built with domestic superconducting qubits and components, and running on the country’s own open-source software toolchain, OQTOPUS. “The system is now ready to take on workloads from its base at the University of Osaka’s Center for Quantum Information and Quantum Biology (QIQB),” reports LiveScience. From the report: The system uses a quantum chip with superconducting qubits — quantum bits derived from metals that exhibit zero electrical resistance when cooled to temperatures close to absolute zero (minus 459.67 degrees Fahrenheit, or minus 273.15 degrees Celsius). The quantum processing unit (QPU) was developed at the Japanese research institute RIKEN. Other components that make up the “chandelier” — the main body of the quantum computer — include the chip package, delivered by Seiken, the magnetic shield, infrared filters, bandpass filters, a low-noise amplifier and various cables.
These are all housed in a dilution refrigerator (a specialized cryogenic device that cools the quantum computing components) to allow for those extremely low temperatures. It also comes alongside a pulse tube refrigerator (which again cools various components in use), controllers and a low-noise power source. OQTOPUS, meanwhile, is a collection of open-source tools that include everything required to run quantum programs. It includes the core engine and cloud module, as well as graphical user interface (GUI) elements, and is designed to be built on top of a QPU and quantum control hardware.