2026-03-30 東京大学
提案方式の概念図
＜関連情報＞
- https://www.i.u-tokyo.ac.jp/news/press/2026/202603302778.shtml
- https://www.i.u-tokyo.ac.jp/news/files/20260330pr_scalable_conflict-free.pdf
- https://www.nature.com/articles/s41534-026-01201-6
量子光学装置を用いたスケーラブルな衝突のないバンディットアルゴリズム Scalable conflict-free bandit algorithm using a quantum optical setup
Kohei Konaka,André Röhm,Takatomo Mihana & Ryoichi Horisaki
npj Quantum Information Published:30 March 2026
DOI:https://doi.org/10.1038/s41534-026-01201-6
Abstract
Quantum optics utilizes the unique properties of light for computation or communication. In this work, we explore its ability to solve certain reinforcement learning tasks, with a particular view towards the scalability of the approach. Our method utilizes the Orbital Angular Momentum (OAM) of photons to solve the Competitive Multi-Armed Bandit (CMAB) problem while maximizing rewards. In particular, we encode each player’s preferences in the OAM amplitudes, while the phases are optimized to avoid conflicts. We find that the proposed system is capable of solving the CMAB problem with a scalable number of options and demonstrates improved performance over existing techniques. Our method utilizes quantum interference to guarantee conflict avoidance using purely physical attributes of light in a way impossible for a classical setup. As an example of a system with simple rules for solving complex tasks, our OAM-based method adds to the repertoire of functionality of quantum optics.
