12 citations · 47 across the 16 of their papers we have counts for
17 papers
Automated Spin Readout Signal Analysis Using U-Net with Variable-Length Traces and Experimental Noise
Yui Muto, Motoya Shinozaki, Hideaki Yuta +5
Single-shot spin-state discrimination is essential for semiconductor spin qubits, but conventional threshold-based analysis of spin readout traces becomes unreliable under noisy co…
Perfect impedance matching unlocks sensitive radio-frequency reflectometry in 2D material quantum dots
Motoya Shinozaki, Akitomi Shirachi, Yuta Kera +7
Two-dimensional (2D) materials are attractive platforms for realizing high-performance quantum bits (qubits). However, radio-frequency (RF) charge detection, which is a key techniq…
Quantum dot transistors based on CVD-grown graphene nano islands
Takumi Seo, Motoya Shinozaki, Akiko Tada +8
Graphene nanoislands (GNIs) are one of the promising building blocks for quantum devices owing to their unique potential. However, direct electrical measurements of GNIs have been…
On-chip calibrated radio-frequency measurement at cryogenic temperatures for determination of SrTiO3-based capacitor properties
Akitomi Shirachi, Motoya Shinozaki, Yasuhide Tomioka +7
Quantum computing has emerged as a promising technology for next-generation information processing, utilizing semiconductor quantum dots as one of the candidates for quantum bits.…
Formation of multiple quantum dots in ZnO heterostructures
Koichi Baba, Kosuke Noro, Yusuke Kozuka +4
In recent years, advancements in semiconductor manufacturing technology have enabled the formation of high-quality, high-mobility two-dimensional electron gases in zinc oxide (ZnO)…
RFSoC-based radio-frequency reflectometry in gate-defined bilayer graphene quantum devices
Motoya Shinozaki, Tomoya Johmen, Aruto Hosaka +8
Quantum computers require both scalability and high performance for practical applications. While semiconductor quantum dots are promising candidates for quantum bits, the complexi…
Automatic detection of single-electron regime of quantum dots and definition of virtual gates using U-Net and clustering
Yui Muto, Michael R. Zielewski, Motoya Shinozaki +2
To realize practical quantum computers, a large number of quantum bits (qubits) will be required. Semiconductor spin qubits offer advantages such as high scalability and compatibil…
Charge sensing of few-electron ZnO double quantum dots probed by radio-frequency reflectometry
Kosuke Noro, Motoya Shinozaki, Yusuke Kozuka +6
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…
Probing electron trapping by current collapse in GaN/AlGaN FETs utilizing quantum transport characteristics
Takaya Abe, Motoya Shinozaki, Kazuma Matsumura +6
GaN is expected to be a key material for next-generation electronics due to its interesting properties. However, the current collapse poses a challenge to the application of GaN FE…
Charge state estimation in quantum dots using a Bayesian approach
Motoya Shinozaki, Yui Muto, Takahito Kitada +1
Detection of single-electron charges in solid-state nanodevices is a key technique in semiconductor quantum bit readout for quantum information processing and probing electronic pr…
Microwave dependent quantum transport characteristics in GaN/AlGaN FETs
Motoya Shinozaki, Takaya Abe, Kazuma Matsumura +3
Defects in semiconductors, traditionally seen as detrimental to electronic device performance, have emerged as potential assets in quantum technologies due to their unique quantum…
Dynamics of quantum cellular automata electron transition in triple quantum dots
Takumi Aizawa, Motoya Shinozaki, Yoshihiro Fujiwara +5
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 w…
Wide dynamic range charge sensor operation by high-speed feedback control of radio-frequency reflectometry
Yoshihiro Fujiwara, Motoya Shinozaki, Kazuma Matsumura +5
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 state…
Radio-frequency reflectometry in bilayer graphene devices utilizing micro graphite back-gates
Tomoya Johmen, Motoya Shinozaki, Yoshihiro Fujiwara +2
Bilayer graphene is an attractive material that realizes high-quality two-dimensional electron gas with a controllable bandgap. By utilizing the bandgap, electrical gate tuning of…
Formation of quantum dots in MoS2 with cryogenic Bi contacts and intrinsic Schottky barriers
Riku Tataka, Alka Sharma, Tomoya Johmen +4
The recent advancement in two-dimensional (2D) materials-based quantum confinement has provided an opportunity to investigate and manipulate electron transport for quantum applicat…
Visual explanations of machine learning model estimating charge states in quantum dots
Yui Muto, Takumi Nakaso, Motoya Shinozaki +13
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 devic…
Gate voltage dependence of noise distribution in radio-frequency reflectometry in gallium arsenide quantum dots
Motoya Shinozaki, Yui Muto, Takahito Kitada +10
We investigate gate voltage dependence of electrical readout noise in high-speed rf reflectometry using gallium arsenide quantum dots. The fast Fourier transform spectrum from the…