Research Results - 研究成果

研究報告

吉川信行、“極限的低消費電力動作を可能とする断熱型QFP論理回路の研究”.

君嶋義英、“Fe系超伝導体の磁束ピンニング特性強化の研究”.

梅原出、“新奇超伝導の多重極限下物性測定による研究”.

島津佳弘、“磁束量子ビットの量子操作及び量子ビットとDC-SQUIDの結合によるサイドバンド遷移”.

上原政智、“新規超伝導体の創生とデバイスへの応用”.

山梨裕希、“高磁束分解能ディジタルSQUID”.

 

2017年

発表論文

N. Takeuchi, S. Nagasawa, F. China, T. Ando, M. Hidaka, Y. Yamanashi, and N. Yoshikawa, “Adiabatic quantum-flux-parametron cell library designed using a 10 kA cm-2 niobium fabrication process,” Supercond. Sci. Technol., vol. 30, no. 3, p. 035002, Mar. 2017.

F. China, N. Tsuji, T. Narama, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Demonstration of Signal Transmission Between Adiabatic Quantum-Flux-Parametrons and Rapid Single-Flux-Quantum Circuits Using Superconductive Microstrip Lines,” IEEE Trans. Appl. Supercond., vol. 27, no. 4, p. 1300205, June 2017.

K. Sano, T. Shimoda, Y. Abe, Y. Yamanashi, N. Yoshikawa, N. Zen, and M. Ohkubo, “Reduction of the Supply Current of Single-Flux-Quantum Time-to-Digital Converters by Current Recycling Techniques,” IEEE Trans. Appl. Supercond., vol. 27, no. 4, p. 1300305, June 2017.

C. Ayala, N. Takeuchi, Y. Yamanashi, T. Ortlepp, and N. Yoshikawa, “Majority-Logic-Optimized Parallel Prefix Carry Look-Ahead Adder Families Using Adiabatic Quantum-Flux-Parametron Logic,” IEEE Trans. Appl. Supercond., vol. 27, no. 4, p. 1300407, June 2017.

G. Konno, Y. Yamanashi, and N. Yoshikawa, “Fully Functional Operation of Low-Power 64-kb Josephson-CMOS Hybrid Memories,” IEEE Trans. Appl. Supercond., vol. 27, no. 4, p. 1300607, June 2017.

T. Tsuji, C. L. Ayala, N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Design and Implementation of a 16-Word by 1-Bit Register File Using Adiabatic Quantum Flux Parametron Logic,” IEEE Trans. Appl. Supercond., vol. 27, no. 4, p. 1300904, June 2017.

ページ先頭へ

2016年

発表論文

A. Nakata, S. Yano, H. Yamamoto, S. Sakura, Y. Kimishima, and M. Uehara, “The first observation of metallic behaviour in Nd3.5Sm0.5Ni3O8,” Advances in Condensed Matter Physics, 2016, pp. 5808029.

上原政智、“高圧装置を利用した層状Ni酸化物での超伝導探索”、 高圧力学会誌, 26巻3号, pp. 253-258.

T. Takahashi, R. Numaguchi, Y. Yamanashi, and N. Yoshikawa, “High-speed demonstration of low-power 1k-bit shift-register memories using LR-biasing SFQ circuits,” IEICE Electron. Express, vol. 13, no. 6, p. 20160074, Mar. 2016.

N. Tsuji, N. Takeuchi, Y. Yamanashi, T. Ortlepp, and N. Yoshikawa, “Majority Gate-Based Feedback Latches for Adiabatic Quantum Flux Parametron Logic,” IEICE Trans. Electron., vol. E99-C, no. 6, pp. 710–716, June 2016.

F. China, T. Narama, N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Design and Demonstration of Interface Circuits between Rapid Single-Flux-Quantum and Adiabatic Quantum-Flux-Parametron Circuits,” IEEE Trans. Appl. Supercond., vol. 26, no. 5, p. 1301305, Jun. 2016.

Q. Xu, C. L. Ayala, N. Takeuchi, Y. Yamanashi, and N. Yoshikawa, “HDL-Based Modeling Approach for Digital Simulation of Adiabatic Quantum Flux Parametron Logic,” IEEE Trans. Appl. Supercond., vol. 26, no. 8, p. 1301805, Dec. 2016.

安藤拓生, 竹内尚輝, 山梨裕希, 吉川信行, “非対称構造を用いた断熱型磁束量子パラメトロン定数セル” 電気学会論文誌A, vol. 136, no. 12, pp. 747-752, Dec. 2016.

山梨裕希, 竹内尚輝, 吉川信行, “低電力超伝導集積回路研究の進展” 電気学会論文誌A, vol. 136, no. 12, pp. 734-739, Dec. 2016.

Y. Shimazu, M. Tashiro, S. Sonobe, M. Takahashi, "Environmental Effects on Hysteresis of Transfer Characteristics in Molybdenum Disulfide" Field-Effect Transistors, Sci. Rep. 6, 30084 (6pp), 2016. 

招待講演・招待論文

Y. Shimazu, R. Shirasaki, "Raman-like transitions in a superconducting quantum circuit and incorporation of a switch made of novel 2D materials" Abstracts of Energy Materials Nanotechnology Meeting on Quantum, C36, 2016.

Y. Yamanashi, T. Matsushima, N. Takeuchi, N. Yoshikawa, and T. Ortlepp, “Evaluation of Current Sensitivity of Quantum Flux Parametron,” International Workshop on Superconducting Sensors & Detectors (IWSSD) 2016, Tsukuba, Japan, Nov. 2016.

山梨裕希, 小箱紗希, 小野智裕, 坂下洋介, 吉川信行, “超伝導信号処理回路とその天文分野への応用” 第16回ミリ波サブミリ波受信機ワークショップ, 電気通信大学, 2016年3月.

ページ先頭へ

2015年

発表論文

S. SAKURA, A. NAKATA, G. HU, Y. KIMISHIMA, I. UMEHARA, and M. UEHARA, “Pressure Effect of Low Dimensional Nickelate and Ruthenate,” JPS Conf. Proc., 8, 2015, pp. 034003-1-6.

N. Takeuchi, Y. Yamanashi, and N. Yoshikawa, “Energy efficiency of adiabatic superconductor logic,” Supercond. Sci. Technol., vol. 28, no. 1, p. 015003, Jan. 2015.

Y. Sakashita, Y. Yamanashi, and N. Yoshikawa, “50 GHz Demonstration of an Integer-Type Butterfly Processing Circuit for an FFT Processor Using the 10 kA/cm^2 Nb Process,” IEICE Trans. Electron., vol. 98, no. 3, pp. 232-237, Mar. 2015.

K. Inoue, N. Takeuchi, T. Narama, Y. Yamanashi, and N. Yoshikawa, “Design and demonstration of adiabatic quantum-flux-parametron logic circuits with superconductor magnetic shields,” Supercond. Sci. Technol., vol. 28, no. 4, p. 045020, Mar. 2015.

N. Takeuchi, Y. Yamanashi, and N. Yoshikawa, “Adiabatic quantum-flux-parametron cell library adopting minimalist design,” J. Appl. Phys., vol. 117, p. 173912, May 2015.

Q. Xu, X. Peng, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Demonstration of Bit-Serial SFQ-Based Computing for Integer Iteration Algorithms,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1300704, Jun. 2015.

N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Experimental Demonstration of Quantum-Flux-Latch-Based Circuits,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1300803, Jun. 2015.

X. Peng, Q. Xu, T. Kato, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi, and M. Hidaka, “High-Speed Demonstration of Bit-Serial Floating-Point Adders and Multipliers Using Single-Flux-Quantum Circuits,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1301106, Jun. 2015.

Y. Sakashita, Y. Yamanashi, and N. Yoshikawa, “High-Speed Operation of an SFQ Butterfly Processing Circuit for FFT Processors Using the 10 kA/cm2 Nb Process,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1301505, Jun. 2015.

K. Sano, Y Takahashi, Y Yamanashi, N Yoshikawa, N Zen, M Ohkubo, “Demonstration of single-flux-quantum readout circuits for time-of-flight mass spectrometry systems using superconducting strip ion detectors,” Supercond. Sci. Technol., vol. 28 no. 7, p. 074003, Jul. 2015.

54. N. Takeuchi, Y. Yamanashi, and N. Yoshikawa, “Thermodynamic Study of Energy Dissipation in Adiabatic Superconductor Logic,” Phys. Rev. Appl., vol. 4, p. 034007, Sep. 2015.

N. Tsuji, N. Takeuchi, T. Narama, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Magnetically coupled quantum-flux-latch with wide operation margins,” Supercond. Sci. Technol., vol. 28, no. 11, p. 115013, Nov. 2015.

S. Nishimoto, Y. Yamanashi, and N. Yoshikawa, “Design Method of Single Flux Quantum Logic Circuits Using Dynamically Reconfigurable Logic Gates,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1301405, Jun. 2015.

K. Sato, Y. Yamanashi, and N. Yoshikawa, “High Speed Operation of Single Flux Quantum Multiple Input Merger Using a Magnetically Coupled SQUID Stack,” IEEE Trans. Appl. Supercond., vol. 25, no. 3, p. 1301605, Jun. 2015.

Y. Shimazu, K. Murata, S. Toda: "Anomalous hysteresis below 1 K in the transfer characteristics of MoS2 field effect transistors", Jpn. J. Appl. Phys., 54, 031201, 2015.

Y. Shimazu, M. Tashiro, S. Sonobe, M. Takahashi, "Characteristics of MoS2 dual-gate FET with ionic-liquid top gating"
, Abstracts of International Symposium on Nanoscale Transport and Technology, p. 157, 2015.

 

招待講演・招待論文

山梨裕希, “超伝導素子の情報処理応用” 第7回ナノスケール磁性体研究会, 東京, 2015年10月.

 

ページ先頭へ

2014年

発表論文

S. Iwase, Y. Kimishima, and M. Uehara, “Pressure and Cr-doping effects of CdCyNi3,” JPS Conf. Proc., 3, 2014, pp. 015030-1-6.

Y. Sakurai, S. Sakura, G, HU, S. Suzuki, I. Umehara, Y. Kimishima, and M. Uehara, “Pressure Effects of Nd3.5Sm0.5Ni3O8 and La3-xNdxNi2O6,” J. Phys. Soc. Jpn. JPS Conf. Proc., 1, 2014, pp. 012086-1-4.

Y. Kimishima*, Y. Sato, M. Uehara and T. Kuramoto, “Vacancy Induced Ferromagnetism of MgO in MgB2 Superconductor,” Trans. Mat. Res. Soc. Japan , 39[3], 2014, pp. 331-334.

D. Ota, Y. Ono, M. Uehara and Y. Kimishima, “Ferromagnetism in Mechanically Milled KNO3,” Trans. Mat. Res. Soc. Japan , 39[3], 2014, pp. 335-338.

上原政智、“アンチペロブスカイト超伝導体の高圧合成”、ケミカルエンジニアリング,
vol.59, No.9、2014、pp. 48-53.

Y. Nozaki, T. Shibata, M. Uehara, T. Kuramoto, Y. Kimishima, “Effect of Ir-addition on pinning property of MgB2,” Physics Procedia, 58, 2014, pp. 114 – 117.

K. Sugai, R Tatsumi, M. Uehara, T. Kuramoto, Y. Kimishima, “Intrinsic Pinning Property of NaFe2Se2 Superconductor,” Physics Procedia, 58, 2014, pp. 118 – 121.

Y. Yamanashi and N. Yoshikawa, “Design and Evaluation of Magnetic Field Tolerant Single Flux Quantum Circuits for Superconductive Sensing Systems,” IEICE Trans. Electron., vol. E97-C, no. 3, pp. 178-181, Mar. 2014.

T. Ortlepp, M. Volkmann, and Y. Yamanashi, “Memory Effect in Balanced Josephson Comparators,” Physica C, vol. 500, pp. 20-24, May 2014.

M. Otsubo, Y. Yamanashi, and N. Yoshikawa, “Optimization of SFQ logic gate considering dependence of its signal propagation delay on the bias voltage,” Physics Procedia, vol. 58, pp. 216-219, Sep. 2014.

K. Sano, Y. Yamanashi, and N. Yoshikawa, “Design and Demonstration of a Single-Flux-Quantum Multi-Stop Time-to-Digital Converter for Time-of-Flight Mass Spectrometry,” IEICE Trans. Electron., vol. E97-C, no. 3, pp. 182-187, Mar. 2014.

X. Peng, Y. Yamanashi, N. Yoshikawa, A. Fujimaki, N. Takagi, K. Takagi, and M. Hidaka, “Design and High-Speed Demonstration of Single-Flux-Quantum Bit-Serial Floating-Point Multipliers Using a 10kA/cm2 Nb Process,” IEICE Trans. Electron., vol. E97-C, no. 3, pp. 188-193, Mar. 2014.

N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “Novel latch for adiabatic quantum-flux-parametron logic,” J Apply. Phys., vol. 115, p.103910, Mar. 2014.

N. Takeuchi, T. Ortlepp, Y. Yamanashi, and N. Yoshikawa, “High-Speed Experimental Demonstration of Adiabatic Quantum-Flux-Parametron Gates Using Quantum-Flux-Latches,” IEEE Trans. Appl. Supercond., vol. 24, no. 4, p. 1300204, Aug. 2014.

K. Sano, Y. Muramatsu, Y. Yamanashi, N. Yoshikawa, N. Zen, and M. Ohkubo, “Reduction of the Jitter of Single-Flux-Quantum Time-to-Digital Converters for Time-of-Flight Mass Spectrometry,” Physica C, vol. 504, pp. 97-101, Sep. 2014.

D. Si, N. Takeuchi, K. Inoue, Y. Yamanashi, and N. Yoshikawa, “Yield analysis of large-scale adiabatic-quantum-flux-parametron logic: The effect of the distribution of the critical current,” Physica C, vol. 504, pp. 102-105, Sep. 2014.

N. Takeuchi, Y. Yamanashi, and N. Yoshikawa, “Reversible logic gate using adiabatic superconducting devices,” Sci. Rep., vol. 4, p. 6354, Sep. 2014.

Y. Shimazu, R. Shirasaki, S. Toda, H. Yamanashi: ""Observation and calculation of higher-order sideband transitions in a flux qubit coupled to a SQUID-based resonator"", J. Phys.: Conf. Ser., Vol. 568, p. 052030 (6 pp), 2014.

招待講演・招待論文

Y. Yamanashi, R. Tsutsumi, and N. Yoshikawa, “Design and Test of Dc-Biased Zero Static Power Single Flux Quantum Circuit,” 27th International Symposium on Superconductivity (ISS2014), Tokyo, Japan, Nov. 2014.

ページ先頭へ

2013年

発表論文

島津佳弘、岡村夏樹、戸田駿一、村田浩太郎、"磁束量子ビットにおけるサイドバンドラビ振動数からの結合定数の推定"、日本物理学会第68回年次大会 講演概要集第4分冊p.718 (2013).

N. Takeuchi, D. Ozawa, Y. Yamanashi and N. Yoshikawa, “Adiabatic quantum flux parametron as an ultra-low-power logic device,” Supercond. Sci. Tech., vol. 26, 2013, 035010 (5pp).

N. Takeuchi, Y. Yamanashi and N. Yoshikawa, “Measurement of 10 zJ energy dissipation of adiabatic quantum-flux-parametron logic using a superconducting resonator,” Appl. Phys. Lett., 102, 052602 (2013).

T. Mukaiyama, N. Takeuchi, Y. Yamanashi and N. Yoshikawa, “Design and Demonstration of an On-chip AC Power Source for Adiabatic Quantum-Flux-Parametron Logic,” Supercond. Sci. Tech., 26, 2013, 035018 (6pp).

N. Takeuchi, K. Ehara, K. Inoue, Y. Yamanashi and N. Yoshikawa, “Margin and Energy Dissipation of Adiabatic Quantum-Flux-Parametron Logic at Finite Temperature,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1700304 (4pp).

K. Inoue, N. Takeuchi, K. Ehara, Y. Yamanashi, and N. Yoshikawa, “Simulation and Experimental Demonstration of Logic Circuits Using an Ultra-low-power Adiabatic Quantum-flux-parametron,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1301105 (5pp).

K. Kuwabara, H. Jin, Y. Yamanashi and N. Yoshikawa, “Design and implementation of 64-kb CMOS static RAMs for Josephson-CMOS hybrid memories,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1700704 (4pp).

K. Ehara, A. Takahashi, Y. Yamanashi, N. Yoshikawa, “Development of pulse transfer circuits for serially biased SFQ circuits using the Nb 9-layer 1-μm process,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1300504 (4pp).

K. Aoki, Y. Yamanashi, and N. Yoshikawa, “Multiplexing Techniques of Single Flux Quantum Circuit Based Readout Circuit for a Multi-Channel Sensing System,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 2500204 (4pp).

M. Otsubo, Y. Yamanashi, and N. Yoshikawa, “Improvement of Operating Margin of SFQ Circuits by Controlling Dependence of Signal Propagation Time on Bias Voltage,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1300904 (4pp).

Y. Tsuga, Y. Yamanashi, and N. Yoshikawa, “Asynchronous Digital SQUID Magnetometer With an On-Chip Magnetic Feedback for Improvement of Magnetic Resolution,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1601405 (4pp).

Y. Yamanashi, K. Umeda, and N. Yoshikawa, “Pseudo Sigmoid Function Generator for a Superconductive Neural Network,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1701004 (4pp).

M. Dorojevets, C. L. Ayala, N. Yoshikawa and A. Fujimaki, “16-Bit Wave-Pipelined Sparse-Tree RSFQ Adder,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1700605 (5pp).

M. Dorojevets, A. K. Kasperek, Member, N. Yoshikawa, and A. Fujimaki, “20-GHz 8 × 8-bit Parallel Carry-Save Pipelined RSFQ Multiplie,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1300104 (4pp).

M. Dorojevets, C. L. Ayala, N. Yoshikawa and A. Fujimaki, “8-Bit Asynchronous Sparse-Tree Superconductor RSFQ Arithmetic-Logic Unit With a Rich Set of Operations,” IEEE Trans. Appl. Supercond., vol. 23, 2013, 1700104 (4pp).

M. Migita, Y. Takikawa, K. Sugai, M. Takeda, M. Uehara, T. Kuramoto, Y. Takano, Y. Mizuguchi, Y. Kimishima, “Substitution effects of Ag into FeSe0.5Te0.5 superconductor”, Physica C, (2013) in press.

Y. Shimazu, M. Takahashi, N. Okamura, ""Observation of Higher-Order Sideband Transitions and First-Order Sideband Rabi Oscillations in a Superconducting Flux Qubit Coupled to a SQUID Plasma Mode"", J. Phys. Soc. Jpn., 82, 074710 (6 pp), 2013.

Y. Shimazu, S. Toda, M. Takahashi, N. Okamura, ""Higher-order sideband transitions and sideband Rabi oscillations in a superconducting flux qubit coupled to a SQUID plasma mode", Abstracts of International Symposium on Nanoscale Transport and Technology, p. 165, 2013.

特許出願・登録

山梨裕希, 測定装置及び測定方法, 特願2013-043481, 2013年3月5日出願.

山梨裕希, 単一磁束量子回路及び単一磁束量子回路動作方法, 特願2013-179205, 2013年8月30日出願.

ページ先頭へ

2012年

発表論文

S. Miura, N. Takeuchi, Y. Yamanashi, N. Yoshikawa, “Implementation of SFQ Microwave Choppers for Controlling Quantum Bits,” Physics Procedia, vol. 36, 2012, pp. 250-255.

H. Jin, K. Kuwabara, Y. Yamanashi, N. Yoshikawa, “Investigation of Robust CMOS Amplifiers for Josephson-CMOS Hybrid Memories,” Physics Procedia, vol. 36, 2012, pp. 229-234.

I. Kataeva, H. Akaike, A. Fujimaki, N. Yoshikawa, N. Takagi, “Experimental Demonstration of an Operand Routing Network Prototype Employing Clock Control and Data Synchronization Scheme,” Physics Procedia, vol. 36, 2012, pp. 349-353.

K. Suzuki, M. Ukibe, S. Shiki, S. Miki, Z. Wang, Y. Takahashi, N. Yoshikawa, M. Ohkubo, “Pulse-Height Distribution Analysis for Superconducting Nanostripline Ion Detector with a Fast Pulse-Integration Analog-Todigital Converter,” Physics Procedia, vol. 36, 2012, pp. 172-176.

Y. Takikawa, M. Migita, K. Sugai, M. Takeda, Y. Nozaki, M. Uehara, T. Kuramoto, Y. Takano, Y. Mizuguchi, H. Takeya, Y. Kimishima, “Magnetization of K0.8Fe2Se2 superconductor”, Physics Procedia, 27, 108 (2012).

M. Ishii, D. Ohta, M. Uehara, Y. Kimishima, “Vacancy Induced Ferromagnetism in Nano-BaTiO3”, Procedia Engineering, 36, 578 (2012).

Y. Kimishima, T. Imamura, D. Ohta, M. Uehara, M. Ishii, “Magneto-Resistance of CrO2/MgO Granular System”, Trans. Mat. Res. Soc. Jpn, vol. 37, 447 (2012).

M. Ishii, D. Ohta, M. Uehara, Y. Kimishima, “Ferromagnetism of Nano-LiNbO3 with Vacancies”, Trans. Mat. Res. Soc. Jpn, vol. 37, 443 (2012).

L. Li, G. Hu, I. Umehara, D. Huo, T. Namiki, K. Nishimura, “Pressure Effects on Magnetic and Magnetocaloric Properties of GdCo2B2,” J. PHYS.SOC. JPN, 81 073701 (2012)

Y. Shimazu, M. Nakajima, M. Takahashi, N. Okamura, K. Yoshiyama, "Simulation of an asymmetric lineshape of a resonant dip observed in a switching-current measurement of a superconducting flux qubit", Physics Procedia, 27, 360 (2012).

Y. Shimazu, N. Okamura, S. Toda, K. Murata, "Sideband transitions near symmetry point in three-Josephson-junction flux qubit", Abstracts of PRACQSYS 2012 (Principles and applications of control in quantum systems) p.35 (2012).

島津佳弘、高橋真起、中島正揮、岡村夏樹、"低エネルギー振動子モードと結合した磁束量子ビットにおけるBlue sidebandのラビ振動の観測"、日本物理学会第67回年次大会 講演概要集第4分冊p. 718 (2012).

島津佳弘、岡村夏樹、戸田駿一、村田浩太郎、"低エネルギー振動子モードと結合した磁束量子ビットにおけるBlue sidebandのラビ振動の観測 II"、日本物理学会2012年秋季大会 講演概要集第4分冊p. 641 (2012).

 

招待講演・招待論文

N. Yoshikawa, "(Invited) Ultra-low-power superconducting logic using adiabatic quantum flux parametrons: What is the minimum energy dissipation in computation?," Laboratory for Physical Sciences Seminar, College Park, U.S.A., March 7, 2012.

N. Yoshikawa, K. Ehara, K. Inoue, N. Takeuchi and Y. Yamanashi, “(Invited) Experimental Demonstration of Ultra-Low-Power Adiabatic Quantum-Flux-Parametron Logic,” International Conference on Superconductivity and Magnetism (ICSM2012), Istanbul, Turkey, April 29-May 4, 2012.

N. Yoshikawa, “(Invited) Ultra-Low-Power, Robust Superconducting Logic using Adiabatic Quantum Flux Parametrons,” 11th International Symposium on High Temperature Superconductors in High Frequency Fields (HTSHFF 2012), May 29, 2012, Matsushima, Miyagi, Japan.

N. Yoshikawa, Y. Takahashi, K. Sano, Y. Yamanashi, M. Okubo, K. Suzuki, N. Zen, M. Koike, S. Miki, Z. Wang, “(Invited) Demonstration of single-flux-quantum readout circuits for time-of-flight mass spectrometry of biomolecules using superconducting nano-stripline detectors,” 2012 Applied Superconductivity Conference (ASC 2012), Portland, Oregon, USA, October, 2012, 4EF-01.

N. Yoshikawa, “(Invited) SFQ Readout for Time of Flight Mass Spectrometry,” The First International Workshop in Supercoonducting Sensor and Detectors (IWSSD2012), Daejeon, Korea, December 12-15, 2012.

吉川信行,“高速情報処理を実現する単一磁束調子(SFQ)回路,” 未来材料, Vol. 12 No. 8, 2012, pp. 1-4. >

特許出願・登録

「超伝導量子ビット素子及びそれを用いた集積回路」(特許第4919051号 平成24年2月10日) 発明者 島津佳弘、出願人 (独)科学技術振興機構

表彰受賞

電子情報通信学会「超伝導エレクトロニクス研究会奨励賞」平成25年1月 受賞者:井上健太(大学院生) 業績:超低消費電力断熱モード磁束量子パラメトロンを用いた論理回路のシミュレーションと動作実証

ページ先頭へ

2011年

D. Ozawa, Y. Yamanashi, N. Yoshikawa, “Design and Evaluation of Multi- Flux-Quantum Drivers Using Under-Damped Josephson Junctions,” IEEE Trans. Appl. Superconductivity, vol. 21, 2011, pp. 835-838.

T. Kainuma, Y. Shimamura, F. Miyaoka, Y. Yamanashi, N. Yoshikawa, A.Fujimaki, K. Takagi, N. Takagi, S. Nagasawa, “Design and Implementation of Component Circuits of an SFQ Half-Precision Floating- Point Adder Using 10-kA/cm^2 Nb Process,” IEEE Trans. Appl. Superconductivity, vol. 21, 2011, pp. 827-830.

F.Miyaoka, T.Kainuma, Y.Shimamura, Y.Yamanashi, N. Yoshikawa, “High- Speed Test of a Radix-2 Butterfly Processing Element for Fast Fourier Transforms Using SFQ Circuits,” IEEE Trans. Appl. Superconductivity, vol. 21, 2011, pp. 823 - 826

Y. Arita, N. Yoshikawa, T. Baba, “Integration of Optical Waveguides With Single Flux Quantum Circuits,” IEEE Trans. Appl. Superconductivity, vol. 21, 2011, pp. 839-842.

*Y. Takikawa, M. Takeda, M. Migita, M. Uehara, T. Kuramoto, Y. Kimishima, “Effect of W-addition on oinning property of MgB2”, Physica C, 471(2011)905. (IF=1.407)

*M. Migita, Y. Takikawa, M. Takeda, M. Uehara, T. Kuramoto, Y. Takano, Y. Mizuguchi, Y. Kimishima, “Intrinsic Pinning property of FeSe0.5Te0.5’, Physica C,471(2011)916. (IF=1.407)

Y. Kimishima, R. Fukushima, Y. Iwasa, M. Uehara, M. Ishii, “Magneto-Resistance Effects in BaTiO3/CrO2 Granular System”, Transaction of the Materials Research Society of Japan, 36(2011)54.

*R. Umemura, M. Ishii, M. Uehara, Y. Kimishima, “Magnetic Properties of Transition Metal Doped CuO by Mechanical Milling”, Transaction of the Materials Research Society of Japan, 36(2011)249.

*M. Ishii, M. Uehara, Y. Kimishima, “Ferromagnetic Behaviors of BaTiO3 Nano-Powder”, Transaction of the Materials Research Society of Japan, 36(2011)615.

Y. Shimazu: "Tunability of Excited-State Energy Levels of Four-Josephson-Junction Circuit in Crossover from Double-Well to Single-Well Potential", J. Phys. Soc. Jpn. 80, 054701 (7 pp) (2011).

Y. Shimazu, M. Nakajima, M. Takahashi, N. Okamura, K. Yoshiyama: "Simulation of an asymmetric lineshape of a resonant dip observed in a switching-current measurement of a superconducting flux qubit", Proceedings of 24th International Symposium on Superconductivity (ISS 2011), to be pulished in Physics Procedia (2012).

Y. Yamanashi, I. Okawa, N. Yoshikawa, “Design Approach of Dynamically Reconfigurable Single Flux Quantum Logic Gate,” IEEE Trans. Appl. Supercond., Vol. 21, no. 3, pp. 831-834, Jun. 2011.

T. Sugiura, Y. Yamanashi, N. Yoshikawa, “Demonstration of 30 Gbit/s generation of superconductive true random number generator,” IEEE Trans. Appl. Supercond., Vol. 21, no. 3, pp. 843-846, Jun. 2011.

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