Zobrazeno 1 - 10
of 103
pro vyhledávání: '"Masaaki Maezawa"'
Autor:
Gao Xiaoping, Huanli Liu, Qi Qiao, Zhen Wang, Minghui Niu, Masaaki Maezawa, Jie Ren, Mingliang Wang
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-5
We have developed a cell library for superconducting large scale integrated (LSI) digital circuits based on Single Flux Quantum (SFQ) devices. The circuits were designed for a 6-kA/cm2 Nb/AlOx/Nb junction process with 10 mask levels including one gro
Autor:
Hui Zhang, Yu Wu, Minghui Niu, Wei Peng, Liyun Chen, L.Z. Ma, Hui Xie, Xue Zhang, Tiantian Liang, Yingyi Shao, Hua Jin, Masaaki Maezawa, Zhen Wang, Wanning Xu, Yang Gao, Jie Ren, Hao Sun, Liliang Ying, Huanli Liu
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-6
We have developed a 6-kA/cm² superconducting integrated circuit fabrication process toward large-scale single flux quantum digital circuits. To evaluate the process reliability and controllability, a set of process control monitors (PCMs) for monito
Publikováno v:
IEEE Transactions on Applied Superconductivity. 31:1-4
We have developed a fabrication technology for superconducting integrated circuits with Nb-based Josephson junctions. The standard fabrication process with 10 mask levels includes 3 Nb superconducting layers and a Mo resistor layer. The influence of
Publikováno v:
Superconductor Science and Technology. 35:115011
An on-chip high-frequency testing method for rapid single flux quantum circuits is proposed. This method employs test vectors based on pseudo-random sequences created by an on-chip high-frequency clock generator (CG) and a linear feedback shift regis
Autor:
The Dang Vu, Masaki Toji, Atsuki Ito, Shigeyuki Miyajima, Thanh Huy Ho, Hiroaki Shishido, Masaaki Maezawa, Mutsuo Hidaka, Masahiko Hayashi, Takekazu Ishida
Publikováno v:
IEEE Transactions on Applied Superconductivity. 28:1-5
We report a vector-scanning SQUID microscope for probing a vector magnetic field. We designed and fabricated a vector [three-dimensional (3-D)] SQUID sensor with the aid of Nb multilayer fabrication technology. Our vector SQUID sensor on a single chi
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 66:1323-1328
We report on our progress in measuring the Boltzmann’s constant by Johnson noise thermometry (JNT) using an integrated quantum voltage noise source (IQVNS) that is fully implemented with superconducting integrated circuit technology. The IQVNS gene
Autor:
Kentaro Imafuku, Kazumasa Makise, Shuichi Nagasawa, Masaaki Maezawa, Shiro Kawabata, Go Fujii, Hanpei Koike, Masahiro Ukibe, Nakagawa Hiroshi, Katsuya Kikuchi, Mutsuo Hidaka
We propose a prime factorizer operated in a framework of quantum annealing (QA). The idea is inverse operation of a multiplier implemented with QA-based Boolean logic circuits. We designed the QA machine on an application-specific-annealing-computing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54e59b8f54718fd71b41a92796162d3a
Autor:
Takuto Okamoto, Masaaki Maezawa, Masahiko Hayashi, Hitoshi Matsumoto, Takekazu Ishida, Shigeyuki Miyajima, Ho Thanh Huy, Mutsuo Hidaka
Publikováno v:
IEEE Transactions on Applied Superconductivity. 25:1-4
We propose a novel system of a 3-D scanning superconducting quantum interference device (SQUID) microscope with high sensitivity for magnetic fields and high spatial resolution. Our 3-D scanning SQUID microscope consists of an XYZ piezodriven scanner
Publikováno v:
Physics Procedia. 65:209-212
We designed and operated a 9-bit single-flux-quantum (SFQ) digital-to-analog converter (DAC). SFQ pulse-frequency modulation (PFM) was employed for generation of variable quantum output voltage, where a 9-bit variable pulse number multiplier and a 10
Publikováno v:
Physics Procedia. 65:213-216
SFQ digital-to-analog converters (DACs) are one of the candidates for AC voltage standards. We have proposed SFQ-DACs based on frequency modulation (FM). Bipolar output is required for applications of AC voltage standards, while our previous SFQ-DACs