Coupling of Photon Emitters in Monolayer WS2 with a Photonic Waveguide Based on Bound States in the Continuum

被引：13

作者：

Liu, Xiao-Jing ^{[1
,2
,3
]}

Yu, Yue ^{[5
]}

Liu, Di ^{[1
,2
,3
]}

Cui, Qi-Long ^{[4
]}

Qi, Xiaozhuo ^{[6
]}

Chen, Yang ^{[1
,2
,3
]}

Qu, Guangyuan ^{[7
]}

Song, Li ^{[4
]}

Guo, Guo-Ping ^{[1
,2
,3
]}

Guo, Guang-Can ^{[1
,2
,3
]}

Sun, Xiankai ^{[5
]}

Ren, Xi-Feng ^{[1
,2
,3
]}

机构：

[1] Univ Sci & Technol China, CAS Key Lab Quantum Informat, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, CAS Ctr Excellence Quantum Informat & Quantum Phys, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China

[4] Univ Sci & Technol China, CAS Ctr Excellence Nanosci, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China

[5] Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China

[6] Tiangong Univ, Sch Phys Sci & Technol, Tianjin 300387, Peoples R China

[7] Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Anhui, Peoples R China

来源：

NANO LETTERS | 2023年 / 23卷 / 08期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

bound states in the continuum; tungsten sulfide; photon emitters; lithium niobate on insulator; QUANTUM EMITTERS; LIGHT;

D O I：

10.1021/acs.nanolett.2c05034

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

On-chip light sources are an essential component of scalable photonic integrated circuits (PICs), and coupling between light sources and waveguides has attracted a great deal of attention. Photonic waveguides based on bound states in the continuum (BICs) allow optical confinement in a low-refractive-index waveguide on a high-refractive-index substrate and thus can be employed for constructing PICs. In this work, we experimentally demonstrated that the photoluminescence (PL) from a monolayer of tungsten sulfide (WS2) could be coupled into a BIC waveguide on a lithiumniobate-on-insulator (LNOI) substrate. Using finite-difference time-domain simulations, we numerically obtained a coupling efficiency of similar to 2.3% for an in-plane-oriented dipole and a near-zero loss at a wavelength of 620 nm. By breaking through the limits of 2D-material integration with conventional photonic architectures, our work offers a new perspective for light-matter coupling in monolithic PICs.

引用

页码：3209 / 3216

页数：8

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