Radio-frequency reflectometry in bilayer graphene devices utilizing microscale graphite back-gates

T Johmen, M Shinozaki, Y Fujiwara, T Aizawa… - Physical Review …, 2023 - APS
Bilayer graphene is an attractive material that hosts a high-quality two-dimensional electron
gas with a controllable band gap. By utilizing the band gap, electrical gate tuning of the …

Wide dynamic range charge sensor operation by high-speed feedback control of radio-frequency reflectometry

Y Fujiwara, M Shinozaki, K Matsumura, K Noro… - Applied Physics …, 2023 - pubs.aip.org
Semiconductor quantum dots are useful for controlling and observing quantum states and
can also be used as sensors for reading out quantum bits and exploring local electronic …

[HTML][HTML] Visual explanations of machine learning model estimating charge states in quantum dots

Y Muto, T Nakaso, M Shinozaki, T Aizawa… - APL Machine …, 2024 - pubs.aip.org
Charge state recognition in quantum dot devices is important in the preparation of quantum
bits for quantum information processing. Toward auto-tuning of larger-scale quantum …

Charge state estimation in quantum dots using a Bayesian approach

M Shinozaki, Y Muto, T Kitada, T Otsuka - arXiv preprint arXiv:2408.03110, 2024 - arxiv.org
Detection of single-electron charges in solid-state nanodevices is a key technique in
semiconductor quantum bit readout for quantum information processing and probing …

Charge sensing of few-electron ZnO double quantum dots probed by radio-frequency reflectometry

K Noro, M Shinozaki, Y Kozuka, K Matsumura… - arXiv preprint arXiv …, 2025 - arxiv.org
Zinc oxide (ZnO) has garnered much attention as a promising material for quantum devices
due to its unique characteristics. To utilize the potential of ZnO for quantum devices, the …

Dynamics of quantum cellular automata electron transition in triple quantum dots

T Aizawa, M Shinozaki, Y Fujiwara, T Kumasaka… - arXiv preprint arXiv …, 2024 - arxiv.org
The quantum cellular automata (QCA) effect is a transition in which multiple electron move
coordinately by Coulomb interactions and observed in multiple quantum dots. This effect will …