より速く、より小さく、そして生体適合性?励起子ロジックがコンピューティングを加速する(Faster, smaller & biocompatible? Excitonic logic could supercharge computing)

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2024-01-31 オーストラリア連邦研究会議(ARC)

◆オーストラリアの研究者が励起子論理に基づくコンピューティングの革新的な手法を提案。励起子は光や他のエネルギー源によって発生し、非常に短寿命ながら多彩な特性を持つ。これを利用してバイナリロジックの代替手法を構築し、励起子回路を用いることで極めて小型なデバイスを可能に。
◆励起子の高速な論理操作により、現代コンピュータよりもはるかに高速なデバイスが構築でき、有機半導体を使用するためバイオコンパチブルな医療機器への応用も期待される。励起子論理は量子励起子コンピューティングなど他の形式にも展開可能。

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多励起子論理のフレームワーク A framework for multiexcitonic logic

Rohan J. Hudson,Thomas S. C. MacDonald,Jared H. Cole,Timothy W. Schmidt,Trevor A. Smith & Dane R. McCamey
Nature Reviews Chemistry  Published:25 January 2024
DOI:https://doi.org/10.1038/s41570-023-00566-y

Abstract

Exciton science sits at the intersection of chemical, optical and spin-based implementations of information processing, but using excitons to conduct logical operations remains relatively unexplored. Excitons encoding information could be read optically (photoexcitation–photoemission) or electrically (charge recombination–separation), travel through materials via exciton energy transfer, and interact with one another in stimuli-responsive molecular excitonic devices. Excitonic logic offers the potential to mediate electrical, optical and chemical information. Additionally, high-spin triplet and quintet (multi)excitons offer access to well defined spin states of relevance to magnetic field effects, classical spintronics and spin-based quantum information science. In this Roadmap, we propose a framework for developing excitonic computing based on singlet fission (SF) and triplet–triplet annihilation (TTA). Various molecular components capable of modulating SF/TTA for logical operations are suggested, including molecular photo-switching and multi-colour photoexcitation. We then outline a pathway for constructing excitonic logic devices, considering aspects of circuit assembly, logical operation synchronization, and exciton transport and amplification. Promising future directions and challenges are identified, and the potential for realizing excitonic computing in the near future is discussed.

より速く、より小さく、そして生体適合性?励起子ロジックがコンピューティングを加速する(Faster, smaller & biocompatible? Excitonic logic could supercharge computing)

1600情報工学一般
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