Accession Number : ADA336250

Title :   JPRS Report, Science & Technology, Japan. Goto Quantum Magneto-Flux Logic Project.

Corporate Author : JOINT PUBLICATIONS RESEARCH SERVICE ARLINGTON VA

PDF Url : ADA336250

Report Date : 23 APR 1992

Pagination or Media Count : 41

Abstract : The Quantum Flux Parametron (QFP), first conceived in 1982, is a superconductive Josephson device that uses quantum flux as the logic unit. The characteristics of the QFP were analyzed through this project, and the QFP has been assessed to be a realistic device. When a quantum flux is used as a logic unit, the device must always be operated in a superconductive state, and superb characteristics such as high speed and low power consumption are realized in comparison with conventional voltage type Josephson devices. As part of the project, we performed a physical operation analysis of the QFP, and a basic circuit analysis of its computer system, making the most of its operational characteristics. We also conducted basic research on a generation of ultralow temperature low magnetic field environment devices. This report outlines the result of these studies, ranging widely from studies in physics, materials and devices of the magnetic flux to software. During these 5 years, the study of superconductive electronics has progressed rapidly, beginning with the discovery of high temperature superconductive materials. We hope this project will be of use in preparing for the next widely expected step. It is expected that devices such as the QFP, which have a quantum flux as the logic unit, will find applications in forthcoming high temperature superconductive materials.

Descriptors :   *HIGH TEMPERATURE SUPERCONDUCTORS, *JOSEPHSON JUNCTIONS, *PARAMETRONS, MAGNETIC FIELDS, FLUX(RATE), QUANTUM THEORY, JAPAN, QUANTUM ELECTRONICS, LOGIC DEVICES, CIRCUIT ANALYSIS, SUPERCONDUCTIVITY.

Subject Categories : Electricity and Magnetism
      Quantum Theory and Relativity

Distribution Statement : APPROVED FOR PUBLIC RELEASE