Hiroki Ishikuro 研究室

主宰者：Hiroki Ishikuro

慶應義塾大学

AI 要約（直近 5 年の研究成果）

石黒研究室では、極低温環境で動作する電子回路システムの設計・開発に取り組んでいます。研究の主な対象は、量子コンピュータの制御に必要なマイクロ波信号生成回路や、極低温での高速・高精度なアナログ・デジタル変換器です。これらのシステムが必要とされる理由は、トラップされたイオンを利用した量子コンピュータの実現に向けて、室温から4Kという前例のない温度範囲で安定に動作する集積回路が不可欠だからです。研究手法としては、標準的なCMOS技術やSiGe BiCMOS技術を用いた集積回路の設計、および4K環境での実装と性能検証を行っています。特に、極低温でのトランジスタ特性の大きな変動（閾値電圧シフト、キャリア移動度の変化など）に対応するための回路工夫が重要です。さらに、ニオブなどの超電導材料をインターコネクト層に用いることで、配線損失を極限まで低減する取り組みも進めています。これまでの研究成果として、室温から極低温まで広い温度範囲で動作するアナログ・デジタル変換器の実現、量子ゲート操作用マイクロ波信号の生成・制御システムの開発、さらには極低温環境下での配線特性の詳細な評価が報告されています。これらの知見は、実用的な量子コンピュータの実現に向けた電子制御基盤の構築に貢献しています。

※ AI（Claude）が、公開されている論文要旨から研究の問い・手法・主要な発見を事実情報として抽出・再構成して自動生成しています。誤りを含む可能性があるため、正確性は研究室公式情報でご確認ください。

外部リンク

研究成果（43 件）

[2025] A Cryo-BiCMOS Controller for Quantum Computers based on Trapped Beryllium Ions
DOI: https://doi.org/10.1109/jssc.2025.3632204
[2025] On-Chip Integration of Self-Joule-Heated Oxide Nanosensors Discriminates Odor Components via Efficient Data Acquisition
DOI: https://doi.org/10.1021/acssensors.5c00641
[2025] A Continuous-Time Pulse Compressor with Linear Frequency-Dependent Delay Achieving 1.66-μs Maximum Delay and Received Echo Enhancement by 6.7-dB for Ultrasound Imaging
DOI: https://doi.org/10.1587/transfun.2025eap1013
[2025] A 4.6-373K Functional 800MS/s 12b Buffer-then-Amplify Charge-Pump-Based Pipelined TI-SAR ADC with Integrated-Active-Hold Technique
DOI: https://doi.org/10.1109/cicc63670.2025.10983297
[2025] 13.3 A Cryo-BiCMOS Controller for 9Be+-Trapped-Ion-Based Quantum Computers
DOI: https://doi.org/10.1109/isscc49661.2025.10904696
[2025] A 4.2–373 K Functional 800-MS/s 12-b Buffer-Then-Amplify Charge-Pump-Based Pipelined TI-SAR ADC With Integrated Active-Hold Technique
DOI: https://doi.org/10.1109/jssc.2025.3642619
[2024] Pulsed-Heating System With an Integrated Metal-Oxide Sensor Array Scheming Low-Power Temperature Modulation
DOI: https://doi.org/10.1109/jsen.2024.3396376
[2024] Superconducting Nb interconnects for Cryo-CMOS and superconducting digital logic applications
DOI: https://doi.org/10.35848/1347-4065/ad37c1
[2024] Imaginary impedance due to hopping phenomena and evaluation of dopant ionization time in cryogenic metal-oxide-semiconductor devices on highly doped substrate
DOI: https://doi.org/10.35848/1882-0786/ad3d2a
[2024] A Cryo-CMOS 10-bit 60-MS/s SAR ADC with common-mode variation suppression switching scheme and gain boosting dynamic comparator
DOI: https://doi.org/10.1016/j.mejo.2024.106435

続きを表示（残り 33 件）

[2024] Low-Power Dual-Core Inductively Coupled 40 GHz Push-Push VCO in 22nm FDSOI CMOS
DOI: https://doi.org/10.23919/eumic61603.2024.10732114
[2024] Orthogonal Decomposition Based Digital Controller Design for Hybrid Converter
DOI: https://doi.org/10.1109/mwscas60917.2024.10658813
[2024] A Fully Integrated Three-Channel Cryogenic Microwave SoC for Qubit State Control in 9Be+ Trapped-Ion Quantum Computer operating at 4 K
DOI: https://doi.org/10.1109/rfic61187.2024.10600018
[2024] 200nm-pitched, Superconducting Nb Interconnects for Cryo-CMOS Application
DOI: https://doi.org/10.1109/iitc61274.2024.10732217
[2023] A Load Adaptive Digital Gate Driver IC With Integrated 500 ksps ADC for Drive Pattern Selection and Functional Safety Targeting Dependable SiC Application
DOI: https://doi.org/10.1109/tpel.2023.3244200
[2023] Design and analysis of a high-speed low-power comparator with regeneration enhancement and through current suppression techniques from 4 K to 300 K in 65-nm Cryo-CMOS
DOI: https://doi.org/10.1016/j.mejo.2023.106066
[2023] A 65nm Cryogenic CMOS Design and Performance at 4.2K for Quantum State Controller Application
DOI: https://doi.org/10.1109/jeds.2023.3340136
[2023] A Reader System with Single-Step Self-Jamming Cancellation for 0.86mm² Passive RFID Tags with an On-chip Antenna
DOI: https://doi.org/10.1109/apmc57107.2023.10439897
[2023] Design of Dual Lower Bound Hysteresis Control in Switched-Capacitor DC–DC Converter for Optimum Efficiency and Transient Speed in Wide Loading Range for IoT Application
DOI: https://doi.org/10.1109/jssc.2023.3330612
[2023] A 4.6–400 K Functional Ringamp-Based 250 MS/s 12 b Pipelined ADC With PVT-Robust Unity-Gain-Frequency-Aware Bias Calibration
DOI: https://doi.org/10.1109/jssc.2023.3328385
[2023] Gate-Length Dependent Variability of nMOSFET at Cryogenic Temperatures
DOI: https://doi.org/10.7567/ssdm.2023.f-1-01
[2023] A High-Speed Low-Power Two-Stage Comparator with Regeneration Enhancement and Through Current Suppression Techniques
DOI: https://doi.org/10.1109/mwscas57524.2023.10406032
[2023] A Cryogenic 12 GHz Frequency Doubler With Temperature Compensation for Trapped-Ion Quantum Computer
DOI: https://doi.org/10.1109/tcsii.2023.3290260
[2023] Accurate Sneak-Path-Controlled Readout for a Cross-Point Resistive Sensor Array
DOI: https://doi.org/10.1109/jsen.2023.3265074
[2023] A 4.6K to 400K Functional PVT-Robust Ringamp-Based 250MS/s 12b Pipelined ADC with Pole-Aware Bias Calibration
DOI: https://doi.org/10.1109/cicc57935.2023.10121320
[2023] Compact model of a metal oxide molecule sensor for self-heating control
DOI: https://doi.org/10.1016/j.sse.2023.108641
[2022] Optimization of Gate Voltage in Capacitive DC–DC Converters for Thermoelectric Energy Harvesting
DOI: https://doi.org/10.1109/tvlsi.2022.3141909
[2022] Impact of Lateral SnO2 Nanofilm Channel Geometry on a 1024 Crossbar Chemical Sensor Array
DOI: https://doi.org/10.1021/acssensors.1c02173
[2022] A Dual-Mode 2:1 Switched Capacitor Converter with >65% Efficiency over 1000x Load Current Range and One Clock Cycle Transient Response
DOI: https://doi.org/10.1109/icecs202256217.2022.9971001
[2022] Spatiotemporal Thermal Management of Homogeneous Oxide Sensor Array for Discrimination of Biomarkers in Mixed Molecules
DOI: https://doi.org/10.7567/ssdm.2022.d-3-02
[2022] An Active Slew Rate Control Gate Driver IC With Robust Discrete-Time Feedback Technique for 600-V Superjunction MOSFETs
DOI: https://doi.org/10.1109/jssc.2022.3201270
[2022] Cryogenic CMOS Performance Analysis Including BEOL Characteristics at 4K for Quantum Controller Application
DOI: https://doi.org/10.1109/iitc52079.2022.9881293
[2021] A Fast Wake-Up and High Accuracy Sensor Interface by Synchronous Sampling with Power-Efficient Switching Regulator
DOI: https://doi.org/10.1109/mwscas47672.2021.9531820
[2021] Simulation and Calibration of Op-Amp Nonidealities in the Voltage Feedback Method for a Cross-Point Resistive Sensor Array
DOI: https://doi.org/10.1109/jsen.2021.3081160
[2021] An 18 Bit Time-to-Digital Converter Design with Large Dynamic Range and Automated Multi-Cycle Concept
DOI: https://doi.org/10.1145/3394885.3431643
[2021] Gate Voltage Optimization in Capacitive DC-DC Converters for Thermoelectric Energy Harvesting
DOI: https://doi.org/10.1145/3394885.3431654
[2021] Cryogenic operation of NanoBridge at 4 K for controlling qubit
DOI: https://doi.org/10.35848/1347-4065/ac4303
[2021] An up to 35 dBc/Hz Phase Noise Improving Design Methodology for Differential-Ring-Oscillators Applied in Ultra-Low Power Systems
DOI: https://doi.org/10.1145/3394885.3431644
[2021] T/R Switch Composed of Three HV-MOSFETs With 12.1-μW Consumption That Enables Per-Channel Self-Loopback AC Tests and −18.1-dB Switching Noise Suppression for 3-D Ultrasound Imaging With 3072-Ch Transceiver
DOI: https://doi.org/10.1109/tvlsi.2021.3129313
[2021] Robust Readout Circuit with Leakage Current Cancellation Technique for Stretchable Touch Sensors
DOI: https://doi.org/10.1109/icecs53924.2021.9665501
[2021] An Amp-Less Time-Domain AC Bridge for Impedance Spectroscopy with 1-bit $\Delta \Sigma$ DAC
DOI: https://doi.org/10.1109/icecs53924.2021.9665536
[2021] A Switched-Capacitor DC-DC Converter with >77.3% Efficiency and 80 ns Active Transient Response in 40 µA - 4 mA Load Current Range
DOI: https://doi.org/10.1109/esscirc53450.2021.9567895
[2021] Cryogenic Operation of NanoBridge at 4K for Controlling Qubit
DOI: https://doi.org/10.7567/ssdm.2021.b-5-08

科研費（0 件）

まだデータがありません（KAKEN 取り込み後に表示）。

所属学会・役職（0 件）

まだデータがありません（学会データ連携後に表示）。

AI 要約（直近 5 年の研究成果）

外部リンク

関連研究室(8 件)

研究成果（43 件）

科研費（0 件）

所属学会・役職（0 件）