Creation of Inverse Problem Computers based on Physically Reversible Logic Circuits

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14248
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Yokohama National University
• Principal Investigator: YOSHIKAWA NOBUYUKI 横浜国立大学, 大学院工学研究院, 教授 (70202398)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 低消費電力 / 可逆回路 / 断熱回路 / 超伝導集積回路 / ジョセフソン集積回路 / 逆問題

Outline of Final Research Achievements

Reversible logic circuits can perform logic operation bidirectionally without change of the entropy of the information, and are known as extremely energy-efficient logic whose power consumption can be well below the thermodynamic limitation called the Landauer’s limit. In this study we aimed to create inverse problem computers with high-energy efficiency by using reversible adiabatic-quantum-flux-parametron (AQFP) circuits, which were proposed in our group previously. We have designed and implemented a reversible full adder using reversible AQFP majority gates and verified its correct operation. We have also numerically evaluated the energy consumption of the reversible full adder and shown that its bit energy can be reduced lower than the Landauer’s limit.

Free Research Field

電子工学、超伝導エレクトロニクス、集積回路工学