冨永雄介、白井菖太郎、菱田有二、寺井弘高、野口篤史
Intrinsic quality factors approaching 10 million in superconducting planar resonators enabled by spiral geometry
EPJ Quantum Technol. 12, 60 (2025), DOI: 10.1140/epjqt/s40507-025-00367-w越野和樹
Galvanically connected tunable coupler between a cavity and a waveguide
New J. Phys. 27, 043001 (2025), DOI: 10.1088/1367-2630/adc1fb星大輔、長瀬寿昭、Sangil Kwon、井山大輔、神谷隆彦、藤井詩織、向井寛人、Shahnawaz Ahmed、Anton Frisk Kockum、渡部昌平、吉原文樹、蔡兆申
Entangling Schrödinger’s cat states by bridging discrete- and continuous-variable encoding
Nat. Commun 16, 1309 (2025), DOI: 10.1038/s41467-025-56503-8田中雅光、北川佳廣、佐藤哲朗、山本剛
Low-Power Single-Flux-Quantum Standard Cell Library Using 250 A/cm2 Process for Qubit Control Applications
IEEE Transactions on Applied Superconductivity 35,1700405 (2024), DOI: 10.1109/TASC.2024.3521892上野洋典、今村智史、富田祐永、谷本輝夫、田中雅光、田渕豊、井上弘士、中村宏
C3-VQA: Cryogenic Counter-Based Coprocessor for Variational Quantum Algorithms
IEEE Transactions on Quantum Engineering 6, 3100317 (2024), DOI: 10.1109/TQE.2024.3521442後藤慎平、越野和樹
Labeling Eigenstates of Qubit-Cavity Systems Based on the Continuity of Qubit Occupancy: Detecting Resonances to Higher Excited Qubit States
J. Phys. Soc. Jpn. 94, 014002 (2025), DOI: 10.7566/JPSJ.94.014002村山洋佑、 川上彰、Shan Wenlei、江﨑翔平、宮地晃平、増井翔、小嶋崇文、鵜澤佳徳
Fabrication and Evaluation of Waveguide Josephson Array Oscillators at Millimeter-Wave Lengths for SIS Mixer-Based Amplifiers
IEEE Transactions on Applied Superconductivity 35, 2400306 (2024), DOI: 10.1109/TASC.2024.3515971大舘暁、斎藤直洋、青山肇、塚本宏之、楠山幸一、中村泰信
Fabrication of superconducting quantum circuits on 12-inch wafers using an ArF immersion lithography system Ⅱ
Proc. SPIE 13115, UV and Higher Energy Photonics: From Materials to Applications 2024, 1311508宮尾知寿、吉永啓人、田中貴久、石黒仁輝、多田宗弘、内田建
Imaginary impedance due to hopping phenomena and evaluation of dopant ionization time in cryogenic metal-oxide-semiconductor devices on highly doped substrate
Appl. Phys. Express 17, 051001(2024), DOI: 10.35848/1882-0786/ad3d2a沼田秀昭、井口憲幸、 田中雅光、岡本浩一郎、三浦貞彦、内田建、石黒仁揮、 阪本利司、多田宗弘
Superconducting Nb interconnects for Cryo-CMOS and superconducting digital logic applications
Jpn. J. Appl. Phys. 63, 04SP73(2024), DOI: 10.35848/1347-4065/ad37c1鵜澤佳徳、川上彰、小嶋崇文、牧瀬圭正、増井翔、宮地晃平、村山洋佑、上月雄人、Shan Wenlei
Development of a Waveguide Josephson Oscillator for SIS Mixer-Based Amplifiers
IEEE Transactions on Applied Superconductivity 34, 2400205 (2024), DOI: 10.1109/TASC.2024.3358780井山大輔、神谷隆彦、藤井詩織、向井寛人、Zhou Yu、長瀬寿昭、朝永顕成、Wang Rui、Jiao-Jiao Xue、渡部昌平、Kwon Sangil、蔡兆申
Observation and manipulation of quantum interference in a superconducting Kerr parametric oscillator
Nat. Commun 15, 86 (2024), DOI: 10.1038/s41467-023-44496-1白家維、内田建、多田宗弘、石黒仁揮
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
Microelectronics Journal 144, C (2023), DOI: 10.1016/j.mejo.2023.106066多田宗弘、岡本浩一郎、田中貴久、宮村信、石黒仁揮、内田建、阪本利司
A 65nm Cryogenic CMOS Design and Performance at 4.2K for Quantum State Controller Application
IEEE Journal of the Electron Devices Society 12, 28 (2023), DOI: 10.1109/JEDS.2023.3340136吉岡輝昭、向井寛人、朝永顕成、高田真太郎、岡崎雄馬、金子晋久、中村秀司、蔡兆申
Active initialization experiment of a superconducting qubit using a quantum circuit refrigerator
Phys. Rev. Applied 20, 044077(2023), DOI: 10.1103/PhysRevApplied.20.044077上野洋典、富田祐永、谷本輝夫、田中雅光、田渕豊、井上弘士、中村宏
Inter-Temperature Bandwidth Reduction in Cryogenic QAOA Machines
IEEE Computer Architecture Letters 23, 9 (2023), DOI: 10.1109/LCA.2023.3322700大舘暁、斎藤直洋、鈴木広介、青山肇、塚本宏之、楠山幸一、中村泰信
Fabrication of superconducting quantum circuits on 12-inch wafers using an ArF immersion lithography system
Proc. SPIE 12652, UV and Higher Energy Photonics: From Materials to Applications 2023, 1265205後藤慎平、越野和樹
Efficient numerical approach for the simulations of high-power dispersive readout with time-dependent unitary transformation
Phys. Rev. A 108, 033722 (2023), DOI: 10.1103/PhysRevA.108.033722山下 薫、Benjamin Hershberg、吉岡 健太郎、石黒仁揮
A 4.6K to 400K Functional PVT-Robust Ringamp-Based 250MS/s 12b Pipelined ADC with Pole-Aware Bias Calibration
2023 IEEE Custom Integrated Circuits Conference (CICC), TX, USA, 2023, pp.740-752Julia Zotova、Rui Wang、 Alexander Semenov、 Yu Zhou、 Ivan Khrapach、 朝永顕成、Oleg Astafiev、 蔡兆申
Compact Superconducting Microwave Resonators Based on Al-AlO x -Al Capacitors
Phys. Rev. Applied 19, 044067 (2023), DOI: 10.1103/PhysRevApplied.19.044067増井翔、小嶋崇文、鵜澤佳徳、牧瀬圭正、小川英夫、大西利和
Proof-of-Concept Experiment on a Wideband Microwave Gyrator with Two Superconductor– Insulator–Superconductor-Based Mixers
IEEE Transactions on Applied Superconductivity 33, 1501204 (2023), DOI: 10.1109/TASC.2023.3258368増井翔、小嶋崇文、鵜澤佳徳、大西利和
A Novel Microwave Nonreciprocal Isolator Based on Frequency Mixers
IEEE Microwave and Wireless Technology Letters 33, 1051 (2023), DOI: 10.1109/LMWT.2023.3253124鵜澤佳徳、小嶋崇文、牧瀬圭正、川上彰、上月雄人、増井翔、単文磊
Development of an SIS Mixer-Based Low-Noise Amplifier Amenable to Josephson Oscillator Pumping
IEEE Transactions on Applied Superconductivity 33, 1500804 (2023), DOI: 10.1109/TASC.2023.3254496水野皓介、竹中崇了, Imran Mahboob , 齊藤志郎
Effect of decoherence for gate operations on a superconducting bosonic qubit
New J. Phys. 25, 033007 (2023), DOI: 10.1088/1367-2630/acc02e田中雅光、北川佳廣、佐藤哲朗、山本剛
Design and Fabrication of Low-Power Single-Flux-Quantum Circuits Toward Quantum Bit Control
IEEE Transactions on Applied Superconductivity 33, 1700805 (2023), DOI: 10.1109/TASC.2023.3251304Iakoupov Ivan 、越野和樹
Saturable Purcell filter for circuit quantum electrodynamics
Phys. Rev. Research 5, 013148 (2023), DOI:10.1103/5.013148小嶋崇文、増井翔、Shan Wenlei、鵜澤佳徳
Characterization of a low-noise superconductor–insulator–superconductor-based microwave amplifier with local oscillator phase-adjusting architecture
Appl. Phys. Lett. 122, 072601 (2023), DOI:10.1063/5.0134595Gopika Lakshmi Bhai、向井寛人、蔡兆申
Mitigation of noise in Josephson parametric oscillator by injection locking
Appl. Phys. Lett. 122, 054002 (2023), DOI:10.1063/5.0134702Gopika Lakshmi Bhai、向井寛人、山本剛、蔡兆申
Noise Properties of a Josephson Parametric Oscillator
Phys. Rev. Applied 19, 014065 (2023), DOI: 10.1103/PhysRevApplied.19.014065Leonid V. Abdurakhimov、 Imran Mahboob、樋田啓、角柳孝輔、松崎雄一郎、齊藤志郎
Identification of Different Types of High-Frequency Defects in Superconducting Qubits
PRX Quantum 3, 040332 (2022), DOI: 10.1103/PRXQuantum.3.040332岡本浩一郎、田中貴久、宮村信、石黒仁揮、内田建、阪本利司、多田宗弘
Cryogenic operation of NanoBridge at 4 K for controlling qubit
Jpn. J. Appl. Phys. 61, SC1049 (2022), DOI: 10.35848/1347-4065/ac4303Sangil Kwon、渡部昌平、蔡兆申
Autonomous Quantum Error Correction in a Four-Photon Kerr Parametric Oscillator
npj Quantum Inf. 8, 40 (2022), DOI: 10.1038/s41534-022-00553-zZhi-Peng Yang, Alakesh Baishya, Huan-Yu Ku, Yu-Ran Zhang, Anton Frisk Kockum, Yueh-Nan Chen, Fu-Li Li, Jaw-Shen Tsai, Franco Nori
Deterministic One-way Logic Gates on a Cloud Quantum Computer
Phys. Rev. A 105, 042610 (2022), DOI: 10.1103/PhysRevA.105.042610Sishi Wu, Dengke Zhan, Rui Wang, Yulong Liu, Shuai-Peng Wang, Qichun Liu, J S Tsai and Tiefu Li
Vacuum-gap-based lumped element Josephson parametric amplifier
Chinese Phys. B 31, 010306 (2022), DOI: 10.1088/1674-1056/ac280c朝永顕成、向井寛人、吉原文樹、蔡兆申
Quasiparticle Tunneling and 1/f Charge Noise in Ultrastrongly Coupled Superconducting Qubit and Resonator
Phys. Rev. B 104, 224509 (2021), DOI: 10.1103/PhysRevB.104.224509宮永崇史、朝永顕成、伊藤輝、向井寛人、蔡兆申
Ultrastrong Tunable Coupler Between Superconducting LC Resonators
Phys. Rev. Applied 16, 064041(2021), DOI: 10.1103/ PhysRevApplied.16.064041吉岡輝昭、蔡兆申
Fast unconditional initialization for superconducting qubit and resonator using quantum-circuit refrigerator
Appl. Phys. Lett. 119, 124003 (2021), DOI: 10.1063/5.0057894Dengke Zhang、蔡兆申