The world faces increasingly complex challenges that demand a computational power superior to that they have been offering traditional machines. Quantum computing promises to address these problems, promoting significant advances in numerous fields. Google, IBM, Microsoft or Fujitsu, are some of the great technological ones that are strongly investing in this field, still green, but traveling an essential R&D path to make it come true.
Fujitsu has very ambitious objectives, with the ultimate goal of achieving a quantum computer totally tolerant with one million cubits of processing power. To do this, and in collaboration with the University of Osaka, it developed its Star architecture, a quantum computing architecture of high efficiency based on phase rotation doors.
This architecture feels the foundations for the first FTQC systems capable of overcoming conventional computers with only 60,000 cubits. Regarding the hardware, the RIKEN RQC-Fujitsu collaboration center, established in 2021 with the Japanese Riken Research and Development Institute, has already produced a 64-cubits superconductive quantum computer in October 2023, followed by a world leader of 256 ubiquites in April 2025.
Fujitsu’s quantum computer
Although the quantum tolerant of failures with a million cubits is the ultimate goal, the Japanese firm wants to offer Short -term practical solutions And he has announced the start of the investigation and development of a superconductor quantum computer with an capacity of more than 10,000 cubits. The construction is scheduled to end in fiscal year 2030.
The new superconductor quantum computer will operate with 250 logical cubits and will use the aforementioned Star architecture of Fujitsu, a quantum computing architecture tolerant of initial phase failures (early FTQC), also developed by the company. Fujitsu aspires to make quantum practical computingespecially in areas such as material science, where complex simulations can generate revolutionary discoveries. To do this, it will focus on the development of key climbing technologies in various technical domains.
Fujitsu undertakes to boost the development of practical and industrialized quantum computing solutions. After the construction of this 10,000 cubits machine, Fujitsu will continue with advanced research initiatives oriented to the integration of superconductor cubits and diamond spin based from fiscal year 2030, and aspires to achieve a machine of 1000 logical cubits in fiscal year 2035, considering the possibility of multiple interconnected quantum chips.
APPROACH AREA IN TECHNOLOGICAL DEVELOPMENT
Fujitsu’s research efforts will focus on the development of the following climbing technologies:
- Cubits manufacturing technology high performance and high precision: improvement of the manufacturing precision of Josephson unions, critical components of superconductor cubits that minimize frequency variations.
- Chip chip interconnection technology: Development of wiring and packaging technologies to allow the interconnection of multiple cubits chips, which facilitates the creation of larger quantum processors.
- High density packaging and low -cost cubits control: Address the challenges associated with cryogenic control and cooling systems, including the development of techniques to reduce the number of components and heat dissipation.
- Decoding technology for the correction of quantum errors: Development of algorithms and systems designs to decode measurement data and correct errors in quantum calculations.
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