Shibaura Institute of Technology, Waseda University and Fujitsu establish quantum computer-based robotic posture optimization

Tokyo and Kawasaki, Japan, August 25, 2025-(JCN Newswire)-Shibaura Institute of Technology (Associate Professor Takuya Otani, Faculty of System Science and Engineering [Human Robot System Laboratory]Waseda University(Professor Atsuo Takanishi, Faculty of Science and Engineering ), and Fujitsu Limited today revealed the advancement of an ingenious approach for effectively managing robotic posture utilizing quantum computing innovation. This brand-new method helps with the effective and precise computation of inverted kinematics, i.e., figuring out joint angles from a target end-effector position, for multi-joint robotics by leveraging qubit-based position representation and quantum entanglement. Confirmation utilizing Fujitsu’s quantum simulator attained as much as a 43% mistake decrease with less computations compared to traditional approaches. The efficiency of quantum entanglement was likewise verified through an experiment performed on the 64-qubit quantum computer system collectively established by RIKEN and Fujitsu.

By revealing the orientation and position of each robotic link as a qubit, and by duplicating the structural impact of moms and dad joint motions on kid joints through quantum entanglement, the variety of needed computations was considerably lowered compared to traditional classical techniques. As quantum computing advances towards useful application, this advancement is anticipated to contribute considerably to the production of next-generation robotics that require real-time control and complex functional abilities.

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Quantum innovation advancement for complicated robotic posture estimation

In robotic posture control, computing inverted kinematics is essential. For robotics with numerous joints, the possible angle mixes are various, needing iterative computations to decrease the inconsistency from the target position and leading to a high computational load. For a full-body multi-joint design with 17 joints, comparable to the variety of joints in the body, the variety of possible estimations needed are too large to be fixed straight. A typical method has actually been to carry out movement estimations with an estimated 7 joints, however this restricts the smoothness of motion.

In this research study, a brand-new technique leveraging the power of quantum computing has actually been proposed to deal with these difficulties. The orientation and position of each robotic part (link) are represented by qubits, and forward kinematics, i.e., estimation of end-effector position from joint angles, is performed utilizing quantum circuits. Inverted kinematics computations are carried out on classical computer systems, attaining effective posture control through a hybrid quantum-classical technique.

Enhanced merging speed and precision with quantum entanglement

By presenting quantum entanglement, the structure where the motion of moms and dad joints naturally affects kid joints is replicated on the quantum circuit. This substantially enhanced the merging speed and precision of inverted kinematics computations. In addition, a trial estimation revealed that movement estimations for a full-body multi-joint design with 17 joints can be carried out in roughly 30 minutes.

Anticipated applications in humanoid and multi-joint robotics

This approach can reveal the posture of multi-joint robotics with a little number of qubits, making it implementable even in existing sound intermediate-scale quantum (NISQ) computer systems. In the future, this innovation might be used to real-time control of humanoid robotics and multi-joint manipulators, challenge avoidance, and energy optimization. More efficiency enhancements are likewise prepared for through mix with sophisticated quantum algorithms such as quantum Fourier change.

Term paper information

Authors:
– Takuya Otani, Shibaura Institute of Technology, Faculty of System Science and Engineering
– Atsuo Takanishi, Waseda University, Faculty of Science and Engineering
– Nobuyuki Hara, Fujitsu Limited
– Yutaka Takita, Fujitsu Limited
– Koichi Kimura, Fujitsu Limited
Title: Quantum calculation for robotic posture optimization

Journal: Scientific Reports, Nature Portfolio
DOI:10.1038/ s41598-025-12109-0

About Shibaura Institute of Technology (SIT), Japan

Shibaura Institute of Technology (SIT) is a personal university with schools in Tokyo and Saitama. Because the facility of its predecessor, Tokyo Higher School of Industry and Commerce, in 1927, it has actually preserved “discovering through practice” as its viewpoint in the education of engineers. SIT was the only personal science and engineering university picked for the Top Global University Project sponsored by the Ministry of Education, Culture, Sports, Science and Technology and had actually gotten assistance from the ministry for 10 years beginning with the 2014 scholastic year. Its slogan, “Nurturing engineers who gain from society and add to society,” shows its objective of cultivating researchers and engineers who can add to the sustainable development of the world by exposing their over 9,500 trainees to culturally varied environments, where they find out to cope, work together, and relate with fellow trainees from all over the world. Discover more: https://www.shibaura-it.ac.jp/en/

About Waseda University

Waseda University was established in 1882 with the starting concepts of “Independence of Scholarship,” “Practical Application of Scholarship,” and the “Fostering of Good Citizens.” It is a personal university with 10 professors, consisting of undergraduate departments, graduate schools, and expert graduate schools. As Waseda University approaches its 150th anniversary in 2032, it is going back to its starting concepts and aiming to additional reinforce its 3 pillars: research study, education, and contribution. Under the viewpoint, “Do not think only of your own interest, your family’s interest, or the interests of your country alone, but be ambitious to contribute to humankind throughout the world,” the University intends to progress into a “university that adds to humankind throughout the world” by 2050. Discover more: https://www.waseda.jp/top/en/

About Fujitsu

Fujitsu’s function is to make the world more sustainable by constructing rely on society through development. As the digital change partner of option for consumers around the world, our 113,000 staff members work to deal with a few of the best obstacles dealing with mankind. Our series of services and services make use of 5 crucial innovations: AI, Computing, Networks, Data & & Security, and Converging Technologies, which we unite to provide sustainability change. Fujitsu Limited (TSE:6702) reported combined incomes of 3.6 trillion yen (US$ 23 billion) for the ended March 31, 2025 and stays the leading digital services business in Japan by market share. Learn more: global.fujitsu

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