1. Design and Demonstration of a Superconducting Field-Programmable Gate Array Using Adiabatic Quantum-Flux-Parametron Logic and Memory
- Author
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Daichi Takahashi, Naoki Takeuchi, Yuki Yamanashi, and Nobuyuki Yoshikawa
- Subjects
all-AQFP FPGA ,Josephson junctions ,AQFP buffer chains ,design flexibility ,Josephson-integrated circuits ,integrated logic circuits ,logic functions ,Superconducting logic circuits ,superconducting FPGAs ,AQFP circuits ,future energy-efficient ,adiabatic switching ,switch blocks ,energy consumption ,field-programmable gate array (FPGA) ,logic circuits ,Adiabatic logic ,logic blocks ,quantum flux parametron (QFP) ,Electrical and Electronic Engineering ,low power consumption ,Clocks ,field programmable gate arrays ,high-performance field-programmable gate array ,low-power memory ,Logic gates ,Switching circuits ,parametric oscillators ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,superconducting-integrated circuits ,connection blocks ,superconducting field-programmable gate array ,high- performance information processing systems ,Power demand ,low-power electronics ,adiabatic quantum-flux-parametron logic - Abstract
Adiabatic quantum-flux-parametron (AQFP) logic is a promising technology for future energy-efficient, high- performance information processing systems because it has significantly low power consumption due to the adiabatic switching of Josephson junctions. We are developing a high-performance field-programmable gate array (FPGA) using superconducting AQFP circuits to reduce its energy consumption. The all-AQFP FPGA consists of logic blocks, switch blocks, connection blocks, and memory using AQFP circuits. In particular, the memory is composed of AQFP buffer chains, enabling high-density and low-power memory. The switch blocks can perform data routing as well as several logic functions, including majority, and, and or functions, which increases the design flexibility of the all-AQFP FPGA. We fabricated a one-unit all-AQFP FPGA and demonstrated its reconfigurable operation at low speed. It was found that much lower power consumption can be achieved in the new FPGA than in the other superconducting FPGAs.
- Published
- 2022