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2020 Fiscal Year Final Research Report

Cavity quantum electrodynamics system with tunable coupling via nonlinear optical effect

Research Project

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Project/Area Number 19K14627
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
Research InstitutionThe University of Tokyo

Principal Investigator

Osada Alto  東京大学, 大学院総合文化研究科, 特任助教 (90804138)

Project Period (FY) 2019-04-01 – 2021-03-31
Keywords半導体量子ドット / フォトニック結晶共振器 / 集積量子光回路
Outline of Final Research Achievements

This study focuses on extension of the cavity quantum electrodynamics system using strongly-coupled quantum-dot-photonic-crystal-cavity system empowered by the transfer printing method, which enables us to heterogeneously integrate nanophotonic devices. As building blocks, a strongly-coupled quantum-dot-photonic-crystal-cavity system is integrated onto a CMOS-processed silicon waveguide and resonant excitation of the quantum dot is implemented using the silicon waveguide as well. These techniques provides important stepping stones toward the realization of more functional, all-solid state photonic cavity quantum electrodynamics systems.

Free Research Field

量子エレクトロニクス

Academic Significance and Societal Importance of the Research Achievements

近年発展の目覚ましい量子技術のなかでも、本研究は単一の量子系である半導体量子ドットとナノ光共振器の結合系を用いた共振器量子力学系に対し、新奇な集積手法を用いてそのさらなる多機能化を行ったものである。本研究は集積量子光回路という量子通信や量子計算などとも相性の良い系であるとされ、伸びしろの大きなものであるといえる。そのなかでもコヒーレントな量子操作を実現するためのナノフォトニック素子や高効率な光子の取り出しのための量子光素子といった重要な要素技術を開発した。

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Published: 2022-01-27  

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