| Project/Area Number |
24656221
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tohoku University |
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Principal Investigator |
NAKAJIMA Koji 東北大学, 電気通信研究所, 教授 (60125622)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Shigeo 東北大学, 電気通信研究所, 教授 (10282013)
ONOMI Takeshi 東北大学, 電気通信研究所, 助教 (70312676)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 単一磁束量子 / 超伝導集積回路 / ニューラルネットワーク / 論理演算記憶回路 / 磁束量子 / レベル論理 / 超伝導回路 / 論理演算回路 / ｒｆ－ＳＱＵＩＤ / 乗算器 / 加算器 / ジョセフソン接合 |
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| Outline of Final Research Achievements |
We studied a possibility of superconducting level logic system in single flux quantum algorithm to investigate rf-SQUID ladder circuits and modified flux quantum parametron circuits. We confirmed the operations of AND, OR, NOT logic by using the presented circuits. Moreover, we demonstrated successfully a 4-bit parallel multiplier using a carry look-ahead adder with niobium integrated circuits to improve the performance of high-speed operation for the single flux-quantum fast Fourier transform and designed a 8-bit parallel multiplier. A neural network using superconducting quantum interference devices was fabricated and successfully demonstrated. Furthermore, we fabricated a neuron circuit using SQUIDs with niobium integrated circuits and successfully demonstrated.
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