Kazuki Koshino
Galvanically connected tunable coupler between a cavity and a waveguide
New J. Phys. 27 043001 (2025), DOI: 10.1088/1367-2630/adc1fbDaisuke Hoshi, Toshiaki Nagase, Sangil Kwon, Daisuke Iyama, Takahiko Kamiya, Shiori Fujii, Hiroto Mukai, Shahnawaz Ahmed, Anton Frisk Kockum, Shohei Watabe, Fumiki Yoshihara, Jaw-Shen Tsai
Entangling Schrödinger’s cat states by bridging discrete- and continuous-variable encoding
Nat. Commun 16, 1309 (2025), DOI: 10.1038/s41467-025-56503-8Yosuke Ueno, Satoshi Imamura, Yuna Tomida, Teruo Tanimoto, Masamitsu Tanaka, Yutaka Tabuchi, Koji Inoue, Hiroshi Nakamura
C3-VQA: Cryogenic Counter-Based Coprocessor for Variational Quantum Algorithms
IEEE Transactions on Quantum Engineering 6, 3100317 (2024), DOI: 10.1109/TQE.2024.3521442Yosuke Murayama, Akira Kawakami, Wenlei Shan, Shohei Ezaki, Akihira Miyachi, Sho Masui, Takafumi Kojima, Yoshinori Uzawa
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.2024.3515971Satoru Odate, Naooki Saito, Hajime Aoyama, Hiroyuki Tsukamoto, Koichi Kusuyama, Yasunobu Nakamura
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, 1311508Tomohisa Miyao, Keito Yoshinaga, Takahisa Tanaka, Hiroki Ishikuro, Munehiro Tada, Ken Uchida
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/ad3d2aHideaki Numata, Noriyuki Iguchi, Masamitsu Tanaka, Koichiro Okamoto, Sadahiko Miura, Ken Uchida, Hiroki Ishikuro, Toshitsugu Sakamoto, Munehiro Tada
Superconducting Nb interconnects for Cryo-CMOS and superconducting digital logic applications
Jpn. J. Appl. Phys. 63, 04SP73(2024), DOI: 10.35848/1347-4065/ad37c1Yoshinori Uzawa, Akira Kawakami, Takafumi Kojima,Kazumasa Makise, Sho Masui, Akihira Miyachi, Yosuke Murayama,Yuto Kozuki, Wenlei Shan
Development of a Waveguide Josephson Oscillator for SIS Mixer-Based Amplifiers
IEEE Transactions on Applied Superconductivity 34, 2400205 (2024), DOI: 10.1109/TASC.2024.3358780Daisuke Iyama, Takahiko Kamiya, Shiori Fujii, Hiroto Mukai, Yu Zhou, Toshiaki Nagase, Akiyoshi Tomonaga, Rui Wang, Jiao-Jiao Xue, Shohei Watabe, Sangil Kwon, Jaw-Shen Tsai
Observation and manipulation of quantum interference in a superconducting Kerr parametric oscillator
Nat. Commun 15, 86 (2024), DOI: 10.1038/s41467-023-44496-1Chia-Wei Pai, Ken Uchida, Munehiro Tada, Hiroki Ishikuro
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.2023.106066Munehiro Tada, Koichiro Okamoto, Takahisa Tanaka, Makoto Miyamura, Hiroki Ishikuro, Ken Uchida, Toshitsugu Sakamoto
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.2023.3340136Teruaki Yoshioka, Hiroto Mukai, Akiyoshi Tomonaga, Shintaro Takada, Yuma Okazaki, Nobu-Hisa Kaneko, Shuji Nakamura, Jaw-Shen Tsai
Active initialization experiment of a superconducting qubit using a quantum circuit refrigerator
Phys. Rev. Applied 20, 044077(2023), DOI: 10.1103/PhysRevApplied.20.044077Yosuke Ueno, Yuna Tomida, Teruo Tanimoto, Masamitsu Tanaka, Yutaka Tabuchi, Koji Inoue, Hiroshi Nakamura
Inter-Temperature Bandwidth Reduction in Cryogenic QAOA Machines
IEEE Computer Architecture Letters 23, 9 (2023), DOI: 10.1109/LCA.2023.3322700Satoru Odate, Naooki Saito, Kosuke Suzuki, Hajime Aoyama, Hiroyuki Tsukamoto, Koichi Kusuyama, Yasunobu Nakamura
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, 1265205Shimpei Goto, Kazuki Koshino
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.108.033722Kaoru Yamashita, Benjamin Hershberg, Kentaro Yoshioka, Hiroki Ishikuro
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, Akiyoshi Tomonaga, Oleg Astafiev, Jaw-Shen Tsai
Compact Superconducting Microwave Resonators Based on Al-AlO x -Al Capacitors
Phys. Rev. Applied 19, 044067 (2023), DOI: 10.1103/PhysRevApplied.19.044067Sho Masui, Takafumi Kojima, Yoshinori Uzawa, Kazumasa Makise, Hideo Ogawa, Toshikazu Onishi
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.2023.3258368Sho Masui, Takafumi Kojima, Yoshinori Uzawa, Toshikazu Onishi
A Novel Microwave Nonreciprocal Isolator Based on Frequency Mixers
IEEE Microwave and Wireless Technology Letters 33, 1051 (2023), DOI: 10.1109/LMWT.2023.3253124Yoshinori Uzawa, Takafumi Kojima, Kazumasa Makise, Akira Kawakami, Yuto Kozuki, Sho Masui, Wenlei Shan
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.2023.3254496Kosuke Mizuno, Takaaki Takenaka, Imran Mahboob, Shiro Saito
Effect of decoherence for gate operations on a superconducting bosonic qubit
New J. Phys. 25, 033007 (2023), DOI: 10.1088/1367-2630/acc02eMasamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Satoh, Tsuyoshi Yamamoto
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.2023.3251304Ivan Iakoupov, Kazuki Koshino
Saturable Purcell filter for circuit quantum electrodynamics
Phys. Rev. Research 5, 013148 (2023), DOI: 10.1103/5.013148Takafumi Kojima, Sho Masui, Wenlei Shan, Yoshinori Uzawa
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, Hiroto Mukai, Jaw-Shen Tsai
Mitigation of noise in Josephson parametric oscillator by injection locking
Appl. Phys. Lett. 122, 054002 (2023), DOI: 10.1063/5.0134702Gopika Lakshmi Bhai, Hiroto Mukai, Tsuyoshi Yamamoto, Jaw-Shen Tsai
Noise Properties of a Josephson Parametric Oscillator
Phys. Rev. Applied.19, 014065 (2023), DOI: 10.1103/PhysRevApplied.19.014065Leonid V. Abdurakhimov, Imran Mahboob, Hiraku Toida, Kosuke Kakuyanagi, Yuichiro Matsuzaki, Shiro Saito
Identification of Different Types of High-Frequency Defects in Superconducting Qubits
PRX Quantum 3, 040332 (2022), DOI: 10.1103/PRXQuantum.3.040332Koichiro Okamoto, Takahisa Tanaka, Makoto Miyamura, Hiroki Ishikuro, Ken Uchida, Toshitsugu Sakamoto, Munehiro Tada
Cryogenic operation of NanoBridge at 4 K for controlling qubit
Jpn. J. Appl. Phys. 61, SC1049 (2022), DOI: 10.35848/1347-4065/ac4303Sangil Kwon, Shohei Watabe, Jaw-Shen Tsai
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, Tiefu Li
Vacuum-gap-based lumped element Josephson parametric amplifier
Chinese Phys. B 31, 010306 (2022), DOI: 10.1088/1674-1056/ac280cAkiyoshi Tomonaga, Hiroto Mukai, Fumiki Yoshihara, Jaw-Shen Tsai
Quasiparticle Tunneling and 1/f Charge Noise in Ultrastrongly Coupled Superconducting Qubit and Resonator
Phys. Rev. B 104, 224509 (2021), DOI: 10.1103/PhysRevB.104.224509Takafumi Miyanaga, Akiyoshi Tomonaga, Hikaru Ito, Hiroto Mukai, Jaw-Shen Tsai
Ultrastrong Tunable Coupler Between Superconducting LC Resonators
Phys. Rev. Applied 16, 064041 (2021), DOI: 10.1103/ PhysRevApplied.16.064041Teruaki Yoshioka, Jaw-Shen Tsai
Fast unconditional initialization for superconducting qubit and resonator using quantum-circuit refrigerator
Appl. Phys. Lett. 119, 124003 (2021), DOI: 10.1063/5.0057894Dengke Zhang, Jaw-Shen Tsai
Magnetic-Free Traveling-Wave Nonreciprocal Superconducting Microwave Components
Phys. Rev. Applied 15, 064013 (2021), DOI: 10.1103/PhysRevApplied.15.064013ULVAC, Inc.
Industry-Academia-Government Collaboration – Toward Technological Innovation for Quantum Computers
ULVAC VALUE REPORT 2022, 2022/11/30Shiro Saito, Hiroki Takei
About NTT's quantum information technology research
Telecommunications September 2022Tsuyoshi Yamamoto, Takahiro Mori
Research and Development of Quantum Computers Based on Superconductor and Semiconductor Devices
IEEJ Electronic Library, 2022/5/1Masamitsu Tanaka, Yuki Yamanashi
Current Status and Issues of Superconductor Peripheral Circuits for Quantum Computers
IEEJ Electronic Library, 2022/5/1L. V. Abdurakhimov, Imran Mahboob, HirakuToida, Kosuke Kakuyanagi, Shiro Saito
A Long-lived Tunable Qubit for Bosonic Quantum Computing
NTT Technical Journal, 2021/3/1Noriyuki Iguchi, Hideaki Numata, Masamitsu Tanaka, Koichiro Okamoto, Takahisa Tanaka, Ken Uchida, Hiroki Ishikuro, Toshitsugu Sakamoto, Munehiro Tada
200nm-pitched, Superconducting Nb Interconnects for Cryo-CMOS Application
2024 International Interconnect Technology Conference (IITC2024), San Jose, California, Session 8_4Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Satoh, Tsuyoshi Yamamoto
High-Frequency Operation of Low-Power Single-Flux-Quantum Circuits Fabricated Using 250 A/cm2 Nb/AlOx/Nb Planarization Process
2023 International Conference on IC Design and Technology (ICICDT), Tokyo, Japan, 2023, pp. 84-87Toshitsugu Sakamoto, Makoto Miyamura, Kazunari Funahashi, Koichiro Okamoto, Munehiro Tada, Takahisa Tanaka, Ken Uchida, Hiroki Ishikuro
Development of 65nm-Cryo-CMOS Circuit Design Library
Design Gaia 2022-hybrid, 2022/11/28-30Takahisa Tanaka, Ken Uchida, Koichiro Okamoto, Munehiro Tada
Stochastic Modeling of Cryogenic and Room Temperature Operation of ReRAM
35th International Microprocesses and Nanotechnology Conference, JR Hotel Clement Tokushima, 2022/11/8-11Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Sato, Tsuyoshi Yamamoto
Design and Fabrication of Extremely Low-Power Single-Flux-Quantum Circuits toward Quantum Bit Control
Applied Superconductivity Conference 2022, Hawaii Convention Center, Honolulu, 2022/10/23-28Yuei Tomida, Yosuke Ueno, Teruo Tanimoto, Masamitsu Tanaka, Koji Inoue, Hiroshi Nakamura
通信量に着目した QAOA 向け極低温 NISQ コンピューティングのアーキテクチャ検討
242nd IPSJ System Architecture Research and Presentation-hybrid, 2022/10/11-12Yasunari Suzuki, Takanori Sugiyama, Tomochika Arai, Wang Liao, Koji Inoue, Teruo Tanimoto
Q3DE: A Fault-Tolerant Quantum Computer Architecture for Multi-Bit Burst Errors by Cosmic Rays
55th IEEE/ACM International Symposium on Microarchitecture, the Westin Chicago River North, 2022/10/4Tomohisa Miyao, Itsuki Imanishi, Takahisa Tanaka, Ken Uchida, Masayuki Ichikawa, Shuya Nakagawa, Hiroki Ishikuro, Toshitsugu Sakamoto, Munehiro Tada
Transient characteristics of 65-nm generation bulk transistors at 4.2 K operation
The 83rd JSAP Autumn Meeting 2022-hybrid, 2022/9/20-23Hirotaka Terai, Kunihiro Inomata, Atsushi Kobayashi, Hiroki Yoshinaka, Tsuyoshi Kodama, Yuuji Hishida, Sunmi Kim, Taro Yamashita, Tomoko Fuse, Fumiki Yoshihara, Kouichi Semba
Uniformity of TiN films grown on Si (100) substrates
The 83rd JSAP Autumn Meeting 2022-hybrid, 2022/9/20-23Sho Masui, Takafumi Kojima, Kazumasa Makise, Hideo Ogawa, Toshikazu Onishi, Yoshinori Uzawa
Proof-of-concept experiment of microwave isolator based on frequency converters
The 83rd JSAP Autumn Meeting 2022-hybrid, 2022/9/20-23Shotaro Shirai, Atsushi Noguchi
Fabrication of high quality superconducting lumped element resonators and Transmon qubits
JPS 2022 Autumn Meeting-hybrid, 2022/9/12-15Shimpei Goto, Kazuki Koshino
Numerical simulations of high-power dissipative readout enhanced by unitary transformations
JPS 2022 Autumn Meeting-hybrid, 2022/9/12-15Takaaki Takenaka, Imran Mahboob, Kosuke Mizuno, Shiro Saito
Design and evaluation of the bosonic code architecture with superconducting cavity
JPS 2022 Autumn Meeting-hybrid, 2022/9/12-15Hirotaka Terai, Sunmi Kim, Kunihiro Inomata, Taro Yamashita, Tomoko Fuse, Fumiki Yoshihara, Sahel Ashhab, Kouichi Semba
Research and development of nitride superconducting qubits
2022 IEICE Society Conference-online, 2022/9/6-9Hiroki Ishikuro
Device characterization/ Device modelling cryogenic PDK
NEXT GENERATION QUANTUM COMPUTING-hybrid, 2022/8/29-30Masayuki Ichikawa
Monitoring technique of self-heating in bulk MOSFETs at cryogenic temperatures
NEXT GENERATION QUANTUM COMPUTING-hybrid, 2022/8/29-30Takafumi Kojima
2030年代のミリ波サブミリ波電波天文学に向けたSIS受信機の技術開発
The 65th JSAP Superconductors Division, Research Meeting-online, 2022/7/21Masayuki Ichikawa, Takahisa Tanaka, Ken Uchida, Tomohisa Miyao, Munehiro Tada, Hiroki Ishikuro
In Situ Monitoring Technique of Self-Heating in Bulk MOSFETs at Cryogenic Temperatures using Subthreshold Current
IEEE Latin American Electron Devices Conference 2022-hybrid, 2022/7/4-6Koichiro Okamoto, Takahisa Tanaka, Makoto Miyamura, Hiroki Ishikuro, Ken Uchida, Toshitsugu Sakamoto, Munehiro Tada
Cryogenic CMOS Performance Analysis Including BEOL Characteristics at 4K for Quantum Controller Application
IITC 2022-hybrid, 2022/6/27-30Tomohisa Miyao, Takahisa Tanaka, Itsuki Imanishi, Masayuki Ichikawa, Shuya Nakagawa, Hiroki Ishikuro, Toshitsugu Sakamoto, Munehiro Tada, Ken Uchida
Enhanced Drain Current in Transient Mode due to Long Ionization Time of Shallow Impurities at 4 K in 65-nm bulk Cryo CMOS Transistors
80th Device Research Conference-hybrid, 2022/6/26-29Masamitsu Tanaka, Yoshihiro Kitagawa, Tetsuro Satoh, Tsuyoshi Yamamoto
Design of Single Flux Quantum Circuits with Critical Current Density Process Lowered to 250 A/cm2 toward Quantum Bit Control
The 69th JSAP Spring Meeting 2022-hybrid, 2022/3/22-26Tomohisa Miyao, Takahisa Tanaka, Ken Uchida
Development of MOS Capacitance Evaluation Method at Cryogenic Temperature (4K)
The 69th JSAP Spring Meeting 2022-hybrid, 2022/3/22-26Shotaro Shirai, Kohei Matsuura, Yasunobu Nakamura, Atsushi Noguchi
Quantum state control of a superconducting resonator using second-order nonlinear effects
JPS 77th Annual Meeting, The Physical Society of Japan-online, 2022/3/17Yuki Matsuyama, Shotaro Shirai, Atsushi Noguchi
Design and Evaluation of Three Layer PCB for Superconducting Circuits
JPS 77th Annual Meeting, The Physical Society of Japan-online, 2022/3/17Akiyoshi Tomonaga, Takafumi Miyanaga, Hikaru Ito, Hiroto Mukai, Jaw-Shen Tsai
Ultrastrong tunable coupler between superconducting LC resonators
JPS 77th Annual Meeting, The Physical Society of Japan-online, 2022/3/17Kosuke Mizuno, Takaaki Takenaka, Imran Mahboob, Shiro Saito
Numerical investigation of gate fidelity by optimal control for Bosonic qubit in superconducting cavity
JPS 77th Annual Meeting, The Physical Society of Japan-online, 2022/3/17Akiyoshi Tomonaga, Takafumi Miyanaga, Hikaru Ito, Hiroto Mukai, Jaw-Shen Tsai
Ultrastrong tunable coupler between superconducting LC resonators
APS March Meeting 2022-online, 2022/3/14-18L. V. Abdurakhimov, I. Mahboob1, H. Toida, K. Kakuyanagi, Y. Matsuzaki, S. Saito
Detection of TLS defects coupled to a c-shunt flux qubit via critical-current fluctuations
APS March Meeting 2022-online, 2022/3/14-18Ivan Iakoupov, Kazuki Koshino
Saturable Purcell filter for circuit QED
APS March Meeting 2022-online, 2022/3/14-18Makoto Negoro, Kazuhisa Ogawa, Takefumi MIYOSHI, Hidehisa Shiomi, Shinichi Morisaka, Mitsuki Kobachi, Kazuma Moriuch, Ryohei Niwase, Yuta Kawai, Keisuke Koike, Satoshi Funada, Shuhei Tamate, Yutaka Tabuchi, Yasunobu Nakamura
Superconducting qubit control with a system of an integrated microwave board and FPGA
APS March Meeting 2022-online, 2022/3/14-18Sho Masui, Takafumi Kojima, Kazumasa Makise, Yoshinori Uzawa, Hideo Ogawa, Toshikazu Onishi
集中定数素子を用いた4-12GHz帯90度ハイブリッドカプラの設計
The Astronomical Society of Japan Annual Spring Meeting 2022-online, 2022/3/3Yoshinori Uzawa, Takafumi Kojima, Kazumasa Makise, Akira Kawakami, Yuto Kozuki, Sho Masui, Wenlei Shan
Development status of an SIS-mixer-based amplifier
The 22nd East Asia Submillimeter-wave Receiver Workshop-online, 2021/11/25-26Sho Masui, Takafumi Kojima, Yoshinori Uzawa, Hideo Ogawa, Toshikazu Onishi
Proof-of-concept experiment on a novel microwave circulator
The 22nd East Asia Submillimeter-wave Receiver Workshop-online, 2021/11/25-26Takafumi Kojima, Yoshinori Uzawa, Yuto Kozuki, Yasunori Fujii, Kazumasa Makise, Wenlei Shan
Microwave performance of an SIS-based amplifier with a millimeter-wave isolator
The 82nd JSAP Autumn Meeting 2021-online, 2021/9/10-13Sho Masui, Takafumi Kojima, Yoshinori Uzawa, Hideo Ogawa, Toshikazu Onishi
アップ/ダウンコンバート Mixer を用いた Isolator のための原理確認実験
Astronomical Society of Japan Annual Fall Meeting 2021-online, 2021/9/13-15Kouichiro Okamoto,Takahisa Tanaka, Makoto Miyamura, Toshitsugu Sakamoto, Hiroki Ishikuro, Ken Uchida, Munehiro Tada
Cryogenic Operation of NanoBridge at 4K for Controlling Qubit
2021 International Conference on Solid State Devices and Materials-online, 2021/9/6-9L. V. Abdurakhimov, Imran Mahboob, Hiraku Toida, Kosuke Kakuyanagi, Yuichiro Matsuzaki, ShiroSaito
Spectroscopy of high-frequency TLS defects in superconducting qubits using a spin-locking pulse sequence
APS March Meeting 2021-online, 2021/3/15-19Takafumi Miyanaga, Hikaru Ito, Akiyoshi Tomonaga, Hiroto Mukai, Jaw-Shen Tsai
Implementation of high intensity variable coupling elements between superconducting quasi-lumped element resonators
JPS 76th Annual Meeting, The Physical Society of Japan-online, 2021/3/12-15Yoshihiro Minegishi, Kosuke Mitarai, Akinori Kagawa, Masahiro Kitagawa, Makoto Negoro
Speeding up numerical optimization of NMR control and evaluating the robustness of the optimized pulse
JPS 76th Annual Meeting, The Physical Society of Japan-online, 2021/3/12-15Sho Masui, Takafumi Kojima, Kazumasa Makise, Hideo Ogawa, Toshikazu Onishi, Yoshinori Uzawa
Concept of a novel microwave isolator for a large integrated circuit
The Applied Superconductivity Conference 2022, Hawaii Convention Center, 2022/10/23-28Takafumi Kojima, Yoshinori Uzawa, Sho Masui, Yuto Kozuki, Yasunori Fujii, Kazumasa Makise, Wenlei Shan
Microwave performance of an SIS-based amplifier with a millimeter-wave isolator
The Applied Superconductivity Conference 2022, Hawaii Convention Center, 2022/10/23-28Sho Masui, Hideo Ogawa , Toshikazu Onishi , Kazumasa Makise , Takafumi Kojima and Yoshinori Uzawa
Proof-of-concept experiment on a novel microwave circulator based on frequency converters
32nd International Symposium on Space Terahertz Technology (ISSTT 2022), Baeza City Hall, Andalusia, 2022/10/16-20Takafumi Kojima, Yoshinori Uzawa, Sho Masui, Yuto Kozuki, Yasunori Fujii, Kazumasa Makise, Wenlei Shan
Noise temperature and S-parameter measurements of an SIS-based microwave amplifier
32nd International Symposium on Space Terahertz Technology (ISSTT 2022), Baeza City Hall, Andalusia, 2022/10/16-20Takaaki Takenaka, Imran Mahboob, Kosuke Mizuno, Takayuki Kubo, Takayuki Saeki, Shiro Saito
High-Q Superconducting 3D Cavities for Bosonic Codes
International Symposium on Novel maTerials and quantum Technologies (ISNTT2021)-online, 2021/12/14-17Kosuke Mizuno, Imran Mahboob, Takaaki Takenaka, Shiro Saito
Numerical Investigation of Gate Fidelity Using Optimal Control Theory on Bosonic Codes in a Circuit-QED System
International Symposium on Novel maTerials and quantum Technologies (ISNTT2021)-online, 2021/12/14-17Leonid Abdurakhimov, Imran Mahboob, Hiraku Toida, Kosuke Kakuyanagi, Yuichiro Matsuzaki, Shiro Saito
A novel technique for the spectroscopy of parasitic defects in superconducting qubits
International Symposium on Superconductivity (ISS2022)-hybrid, 2022/11/29-12/1Munehiro Tada
不揮発・低消費電力ナノブリッジFPGA 技術とIoT 端末への応用
The Planarization and CMP Technical Committee, The Japan Society for Precision Engineering (The 202nd Research Meeting)-hybrid, 2022/10/21Jaw-Shen Tsai
Recent progress in superconducting quantum information
Virtual QBIC Workshop 2022-online, 2022/10/12-14Aiko Yamaguchi
Recent Progress in Quantum annealing machine using Kerr-Parametric Oscillators
2022 International Conference on Solid State Devices and Materials-online, 2022/9/26-29Munehiro Tada
Challenge and Opportunity of Low-power Nonvolatile FPGA using NanoBridge for Cryogenic Quantum Controller
2022 International Conference on Solid State Devices and Materials-online, 2022/9/26-29Ken Uchida, Takahisa Tanaka, Tomohisa Miyao
Device characterization for cryogenic CMOS, investigating self heating phenomena
NEXT GENERATION QUANTUM COMPUTING-hybrid, 2022/8/29-30Atsushi Noguchi
Hybrid quantum systems with trapped electrons via superconducting circuits
NEXT GENERATION QUANTUM COMPUTING-hybrid, 2022/8/29-30L. V. Abdurakhimov, I. Mahboob, H. Toida, K. Kakuyanagi, Y. Matsuzaki, S. Saito
Detection of high-frequency defects in superconducting qubits
SQA Conference 2022-hybrid, 2022/8/25-28Jaw-Shen Tsai
Superconducting quantum computer and its future issue
QLEAR Fellowship Researcher Exchange-hybrid, 2022/3/8Yoshinori Uzawa, Takafumi Kojima, Wenlei Shan, Kazumasa Makise, Gonzalez Alvaro, Norihiko Sekine
Research and development toward ALMA upgrades
International Symposium on Future Trends of Terahertz Semiconductor Technologies 2022(TST2022)-online, 2022/3/6Jaw-Shen Tsai
Planar integration of superconducting qubits
ISQNS 2022 International Symposium on Quantum Nano Science-online, 2022/1/13Jaw-Shen Tsai
Superconducting quantum computer and its future issues
14th Pacific Rim Conference on Ceramic and Glass Technology (PACRIM 14)-online, 2021/12/13-16Tsuyoshi Yamamoto
Progress in superconducting quantum computer
The 45th Quantum Information Technology Symposium (QIT45)-online, 2021/11/30-12/1Jaw-Shen Tsai
Superconducting quantum information, recent progress in our lab
The Virtual QBIC Workshop 2021-online, 2021/10/13-15Masayuki Shirane
NEC's Research and Development for quantum computing
The 4th SSS Promotion Forum "Quantum Science and Technology towards Super Smart Society"-online, 2021/9/29Jaw-Shen Tsai
Superconducting quantum computer
The 1st RIKEN-Tokyo University of Science Joint Symposium-online, 2021/3/25Makoto Negoro