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2016
Fluxes
Inductance
Logic circuits
Excited states
Superconducting materials

Demonstration of 10k gate-scale adiabatic-quantum-flux-parametron circuits

Narama, T., Yamanashi, Y., Yoshikawa, N., Takeuchi, N. & Ortlepp, T. 2016 Jan 14 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 7383438

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluxes
Superconducting materials
Energy dissipation
Demonstrations
Fluxes
Flip flop circuits

Design and high-speed component tests of an SFQ FFT processor using the 10 kA/cm2 Nb advanced process

Sakashita, Y., Ono, T., Yamanashi, Y. & Yoshikawa, N. 2016 Jan 14 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 7383442

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fast Fourier transforms
Fluxes
ROM
Logic circuits

Design of an extremely energy-efficient hardware algorithm using adiabatic superconductor logic

Xu, Q., Yamanashi, Y., Yoshikawa, N., Ayala, C. L., Takeuchi, N. & Ortlepp, T. 2016 Jan 14 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 7383446

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hardware
Superconducting materials
Energy efficiency
Energy dissipation
Semiconductor materials
Fluxes
Computer hardware description languages
Adders
Finite automata
Fabrication

High-speed demonstration of low-power 1 k-bit shift-register memories using LR-biasing SFQ circuits

Takahashi, T., Numaguchi, R., Yamanashi, Y. & Yoshikawa, N. 2016 Mar 16 In : IEICE Electronics Express. 13, 6

Research output: Contribution to journalArticle

Shift registers
Electric power utilization
Bias currents
Inductance
Microprocessor chips

Improvement of energy efficiency of 64-kb Josephson-CMOS hybrid memories

Konno, G., Sasaki, Y., Yamanashi, Y. & Yoshikawa, N. 2016 Jan 14 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 7383463

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electric power utilization
Random access storage
Energy efficiency
Fluxes
Sensors
Bias currents
Electric lines
Fluxes
Shift registers
Recovery
SQUIDs
Energy dissipation
Thermal noise
Circuit simulation
Analog circuits
Digital circuits
Integrated circuits
Fluxes
Logic circuits
Timing jitter
Thermal noise
Shift registers

Study of signal interface between single flux quantum circuit and adiabatic quantum flux parametron

China, F., Narama, T., Takeuchi, N., Yamanashi, Y., Yoshikawa, N. & Ortlepp, T. 2016 Jan 14 2015 15th International Superconductive Electronics Conference, ISEC 2015. Institute of Electrical and Electronics Engineers Inc., 7383483

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluxes
Magnetic flux
Hybrid systems
Electric lines
2015
2 Citations
Fast Fourier transforms
Fluxes
Demonstrations
7 Citations
Fluxes
Electric wiring
Logic design
Magnetic couplings
Logic circuits
1 Citations

Demonstration of bit-serial SFQ-based computing for integer iteration algorithms

Xu, Q., Peng, X., Ortlepp, T., Yamanashi, Y. & Yoshikawa, N. 2015 Jun 1 In : IEEE Transactions on Applied Superconductivity. 25, 3, 6967746

Research output: Contribution to journalArticle

Clocks
Electric power utilization
Fluxes
Energy efficiency
Demonstrations
Fluxes
Detectors
Ions
Mass spectrometry
Discriminators
1 Citations
Superconducting materials
Fluxes
Digital circuits
Demonstrations
Magnetic couplings
Fluxes
Logic gates
Adders
Logic circuits
Boolean functions
2 Citations

Energy efficiency of adiabatic superconductor logic

Takeuchi, N., Yamanashi, Y. & Yoshikawa, N. 2015 Jan 1 In : Superconductor Science and Technology. 28, 1, 015003

Research output: Contribution to journalArticle

Superconducting materials
Energy efficiency
Temperature
Scaling laws
Thermal energy

Experimental demonstration of quantum-flux-latch-based circuits

Takeuchi, N., Ortlepp, T., Yamanashi, Y. & Yoshikawa, N. 2015 Jun 1 In : IEEE Transactions on Applied Superconductivity. 25, 3, 6967740

Research output: Contribution to journalArticle

Fluxes
Flip flop circuits
Energy dissipation
Adders
Schematic diagrams
1 Citations

High-speed demonstration of bit-serial floating-point adders and multipliers using single-flux-quantum circuits

Peng, X., Xu, Q., Kato, T., Yamanashi, Y., Yoshikawa, N., Fujimaki, A., Takagi, N., Takagi, K. & Hidaka, M. 2015 Jun 1 In : IEEE Transactions on Applied Superconductivity. 25, 3, 6990569

Research output: Contribution to journalArticle

Fluxes
Adders
Clocks
Network routing
Energy efficiency
1 Citations
Fast Fourier transforms
Clocks
Energy dissipation
Fluxes
Merging
Fluxes
Circuit simulation
SQUIDs
Electric lines

Magnetically coupled quantum-flux-latch with wide operation margins

Tsuji, N., Takeuchi, N., Narama, T., Ortlepp, T., Yamanashi, Y. & Yoshikawa, N. 2015 Sep 29 In : Superconductor Science and Technology. 28, 11, 115013

Research output: Contribution to journalArticle

Fluxes
Superconducting materials
1 Citations
Superconducting materials
Energy dissipation
Temperature
Thermal noise
Logic gates
2014
4 Citations
Fluxes
Timing jitter
Mass spectrometry
Clocks
Microwave oscillators

Design and development of a heat engine with SMA actuator as a proof of concept prototype of a propulsion device for an in-liquid micro robot

Imamura, R., Aono, H., Fuchiwaki, O., Yamanashi, Y. & Böhringer, K. F. 2014 Jan 1 Proceedings - ASPE/ASPEN Summer Topical Meeting: Manufacture and Metrology of Freeform and Off-Axis Aspheric Surfaces. American Society for Precision Engineering, ASPE, p. 147-152 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heat engines
Propulsion
Actuators
Robots
Liquids
1 Citations
Magnetic fields
Fluxes
Flip flop circuits
Electric wiring
Sensor arrays
7 Citations

Design and high-speed demonstration of single-flux-quantum bit-serial floating-point multipliers using a 10 kA/cm2 Nb process

Peng, X., Yamanashi, Y., Yoshikawa, N., Fujimaki, A., Takagi, N., Takagi, K. & Hidaka, M. 2014 Mar 13 In : IEICE Transactions on Electronics. E97-C, 3, p. 188-193 6 p.

Research output: Contribution to journalArticle

Electric power utilization
Systolic arrays
Clocks
Demonstrations
Fluxes

Formulation and optimization of pulley-gear-type SMA heat engine toward microfluidic MEMS motor

Aono, H., Imamura, R., Fuchiwaki, O., Yamanashi, Y. & Bohringer, K. F. 2014 Jan 1 IEEE International Conference on Intelligent Robots and Systems. Institute of Electrical and Electronics Engineers Inc., p. 2839-2845 7 p. 6942952

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heat engines
Shape memory effect
Pulleys
MEMS
Gears

Frictional shear test of granular media in pseudo low-gravity field using a magnetic device

Morosawa, S., Nishimoto, S., Ozaki, S. & Yamanashi, Y. 2014 18th International Conference of the ISTVS. International Society for Terrain Vehicle Systems

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gravitation
Magnetic devices
Torque
Vacuum
Friction
5 Citations
Fluxes
Flip flop circuits
Demonstrations
1 Citations

Memory effect in balanced Josephson comparators

Ortlepp, T., Volkmann, M. H. & Yamanashi, Y. 2014 May 15 In : Physica C: Superconductivity and its Applications. 500, p. 20-24 5 p.

Research output: Contribution to journalArticle

Clocks

Modeling and analysis of a heat engine with coil-spring-shaped SMA for steady state performance and starting condition

Aono, H., Imamura, R., Fuchiwaki, O., Yamanashi, Y. & Böhringer, K. F. 2014 Jan 1 Proceedings - ASPE/ASPEN Summer Topical Meeting: Manufacture and Metrology of Freeform and Off-Axis Aspheric Surfaces. American Society for Precision Engineering, ASPE, p. 137-141 5 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Heat engines
7 Citations

Novel latch for adiabatic quantum-flux-parametron logic

Takeuchi, N., Ortlepp, T., Yamanashi, Y. & Yoshikawa, N. 2014 Mar 14 In : Journal of Applied Physics. 115, 10, 103910

Research output: Contribution to journalArticle

Fluxes
Shift registers
Logic gates
Flip flop circuits
Clocks
1 Citations

Reduction of the jitter of single-flux-quantum time-to-digital converters for time-of-flight mass spectrometry

Sano, K., Muramatsu, Y., Yamanashi, Y., Yoshikawa, N., Zen, N. & Ohkubo, M. 2014 Sep 15 In : Physica C: Superconductivity and its Applications. 504, p. 97-101 5 p.

Research output: Contribution to journalArticle

Jitter
Fluxes
Mass spectrometry
Clocks
Bias currents
3 Citations

Reversible computing using adiabatic superconductor logic

Takeuchi, N., Yamanashi, Y. & Yoshikawa, N. 2014 Jan 1 Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, Vol. 8507 LNCS, p. 15-25 11 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 8507 LNCS)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluxes
Energy dissipation
Superconducting materials
Potential energy
Energy efficiency
10 Citations
Logic gates
Energy dissipation
Superconducting devices
Logic devices
Entropy
1 Citations
Fluxes
Critical currents
Circuit simulation
Inductance
Integrated circuits
2013

60-GHz demonstration of an SFQ half-precision bit-serial floating-point adder using 10 kA/cm2 Nb process

Kato, T., Yamanashi, Y., Yoshikawa, N., Fujimaki, A., Takagi, N., Takagi, K. & Nagasawa, S. 2013 Oct 16 2013 IEEE 14th InternationalSuperconductive Electronics Conference, ISEC 2013. 6604272

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Adders
Fluxes
Electric power utilization
Demonstrations
Metals
38 Citations

An adiabatic quantum flux parametron as an ultra-low-power logic device

Takeuchi, N., Ozawa, D., Yamanashi, Y. & Yoshikawa, N. 2013 Mar 1 In : Superconductor Science and Technology. 26, 3, 035010

Research output: Contribution to journalArticle

Fluxes
Energy dissipation
Logic devices
Thermal energy
Inductance

Analysis of computational energy efficiency in single-flux-quantum electronics by implementing an integer-based hardware-algorithm

Xu, Q., Shimamura, Y., Yamanashi, Y., Yoshikawa, N. & Ortlepp, T. 2013 Oct 15 2013 IEEE 14th InternationalSuperconductive Electronics Conference, ISEC 2013. 6604280

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Clocks
Electric power utilization
Fluxes
Hardware
Quantum electronics
SQUIDs
Magnetometers
Magnetic flux
Feedback
Clocks

Demonstration of fully functional 64-kb Josephson/CMOS hybrid memory

Peng, X., Sasaki, Y., Jin, H., Kuwabara, K., Yamanashi, Y. & Yoshikawa, N. 2013 Oct 15 2013 IEEE 14th InternationalSuperconductive Electronics Conference, ISEC 2013. 6604267

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Random access storage
Differential amplifiers
Demonstrations
Sensors
1 Citations
Fluxes
Bias currents
Superconducting resonators
Relaxation oscillators
Potential energy

Design and high-speed tests of a single-flux-quantum time-to-digital converter for time-of-flight mass spectrometry

Sano, K., Takahashi, A., Yamanashi, Y., Yoshikawa, N., Zen, N., Suzuki, K. & Ohkubo, M. 2013 Oct 15 2013 IEEE 14th InternationalSuperconductive Electronics Conference, ISEC 2013. 6604259

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fluxes
Mass spectrometry
Bias currents
Jitter
4 Citations

Design and implementation of 64-kb CMOS static RAMs for Josephson-CMOS hybrid memories

Kuwabara, K., Jin, H., Yamanashi, Y. & Yoshikawa, N. 2013 Jan 28 In : IEEE Transactions on Applied Superconductivity. 23, 3, 6359781

Research output: Contribution to journalArticle

Random access storage
Differential amplifiers
Static random access storage
Transistors
Electric power utilization
3 Citations
Fluxes
Bias currents
Shielding
Magnetic fields
Fluxes
Bias voltage
Electric lines
Digital circuits
Circuit simulation