Tohoku University Technology: Multiplex transmission of information by electron spin wave: T20-656_T21-213
Realization of massive information processing by miniaturizing photoelectric conversion device and reducing electric power consumption
Optical fiber has been put into practical use by using the parallelism and multiplexing characteristics of the light as a wave. However, the corresponding photoelectric conversion equipment is required with the increase of the information to be transmitted, resulting in larger device and higher electric power consumption. On the other hand, unlike light, electron cannot incorporate parallelism and multiplexing characteristics, so in principle, electronic device such as semiconductor integrated circuit can not transmit multiple pieces of information simultaneously. This invention can perform multiplex transmission of information with solid-state electronic device, which has been performed with optical fiber so far, by focusing on "electron spin wave" having wave characteristic, that is to say using its wavelength as information and superimposing electron spin wave on each other. This eliminates the need for sequential calculation when processing multiplex information, and it is expected to replace existing photoelectric conversion device by its miniaturization and electric power consumption reduction, potentially contributing to the vast increase in information processing in the future. Also, the device that collectively transmits, processes and records multi-state information using multiplex electron spin wave could be realized.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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