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arXiv · 2508.04093

Trapping an Atomic Ion using Time-Division Multiplexed Digital-to-Analog Converters

Ryutaro Ohira·Masanari Miyamoto·Shinichi Morisaka·Ippei Nakamura·Atsushi Noguchi·Utako Tanaka·Takefumi Miyoshi
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Abstract

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 $^{40}\mathrm{Ca}^+$ 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.

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Ryutaro Ohira, Masanari Miyamoto, Shinichi Morisaka, Ippei Nakamura, Atsushi Noguchi, Utako Tanaka, Takefumi Miyoshi. 2025-08-06. Trapping an Atomic Ion using Time-Division Multiplexed Digital-to-Analog Converters. https://arxiv.org/abs/2508.04093

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