Enhancing coupling coefficient in a hybrid nanotoroid-nanowire system

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2019,（3）
• 页码范围: 86-90
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL201917.032702

摘要

Enhancing light-matter interaction in cavity quantum electrodynamics has aroused widespread interests in on-chip quantum information processing.Here,we propose a hybrid nanotoroid-nanowire system to enhance photon-exciton interaction.A nanoscale gap is formed by placing a dielectric nanowire close to a dielectric nanotoroid,where the coupling coefficient between photon and emitter can achieve 5.55 times of that without nanogap.Meanwhile,the cavity loss and spontaneous emission of the emitter will remain at a small value to guarantee the realization of strong coupling.The method might hold promise for the research of nanophotonics,quantum optics,and novel optical devices.