Independent control of numerous electrodes in quantum charge-coupled device architectures presents a significant challenge for wiring and hardware scalability. To address this issue, we demonstrate a voltage control method based on time-division multiplexing (TDM). This approach utilizes a single high-update-rate digital-to-analog converter (DAC) to sequentially generate control signals for multiple electrodes, thereby reducing both the number of required DACs and associated wiring. We experimentally validate this concept by developing a 10-channel system that operates with only two DACs. The developed TDM-based voltage control system is applied to a surface-electrode trap, where we successfully trap a single 40Ca+ ion and demonstrate a simple ion transport primitive. This approach offers a resource-efficient and scalable solution for advanced quantum computing systems based on trapped ions.
@article{arxiv.2508.04093,
title = {Trapping an Atomic Ion using Time-Division Multiplexed Digital-to-Analog Converters},
author = {Ryutaro Ohira and Masanari Miyamoto and Shinichi Morisaka and Ippei Nakamura and Atsushi Noguchi and Utako Tanaka and Takefumi Miyoshi},
journal= {arXiv preprint arXiv:2508.04093},
year = {2025}
}