Research theme for competitive and other funds (1)：
2021 - 2023 冷却イオンのフォノンを用いた量子シミュレータの研究
Papers (15)：
Ryutaro Ohira, Masanari Miyamoto, Shinichi Morisaka, Ippei Nakamura, Atsushi Noguchi, Utako Tanaka, Takefumi Miyoshi. Trapping an atomic ion using time-division multiplexed digital-to-analog converters. Applied Physics Letters. 2025. 127. 23
Ryutaro Ohira, Shinichi Morisaka, Ippei Nakamura, Atsushi Noguchi, Takefumi Miyoshi. Multiplexed Control at Scale for Electrode Arrays in Trapped-Ion Quantum Processors. 2025 IEEE International Conference on Quantum Computing and Engineering (QCE). 2025. 1351-1359
T. Oshio, R. Nishimoto, T. Higuchi, K. Hayasaka, K. Koike, S. Morisaka, T. Miyoshi, R. Ohira, U. Tanaka. Development of a bipolar 50 V output digital-to-analog converter system for ion-shuttling operations. Journal of Applied Physics. 2025. 137. 14
Takefumi Miyoshi, Keisuke Koike, Shinichi Morisaka, Yuuya Sugita, Toshi Sumida, Yutaka Tabuchi, Makoto Negoro, Hidehisa Shiomi, Ippei Nakamura, Takafumi Tomita, et al. Toward Scalable Heterogeneous Controller System for Various Quantum Computer by Using Multiple FPGAs. 2025 IEEE International Conference on Consumer Electronics (ICCE). 2025. 1-5
R. Ohira, R. Matsuda, H. Shiomi, K. Ogawa, M. Negoro. Optimizing multi-tone microwave pulses via phase selection for quantum computing applications. Journal of Applied Physics. 2024. 136. 11
Yoshinori Kurimoto, Dongjun Lee, Koichiro Ban, Shinichi Morisaka, Toshi Sumida, Hidehisa Shiomi, Yosuke Ito, Yuuya Sugita, Makoto Negoro, Ryutaro Ohira, et al. Microwave Output Stabilization of a Qubit Controller via Device-Level Temperature Control. 2025
R. Matsuda, R. Ohira, T. Sumida, H. Shiomi, A. Machino, S. Morisaka, K. Koike, T. Miyoshi, Y. Kurimoto, Y. Sugita, et al. Selective Excitation of Superconducting Qubits with a Shared Control Line through Pulse Shaping. 2025
2025/12 - Scilight Trapping an atomic ion using time-division multiplexed digital-to-analog converters
2025/12 - Featured Article Trapping an atomic ion using time-division multiplexed digital-to-analog converters
2025/09 - IEEE International Conference on Quantum Computing & Engineering (QCE25) Best Technical Paper (3rd place) in the QTEM track Multiplexed Control at Scale for Electrode Arrays in Trapped-Ion Quantum Processors
2024/09 - Scilight Optimizing multi-tone microwave pulses via phase selection for quantum computing applications
2024/09 - Featured Articles Optimizing multi-tone microwave pulses via phase selection for quantum computing applications
