量子电子学报2024，Vol.41Issue(5)：793-801,9.DOI:10.3969/j.issn.1007-5461.2024.05.009
DLC膜对金刚石纳米柱NV色心发光收集强度的影响
Influence of DLC film on luminescence collection intensity of NV center of diamond nanopillars
摘要
Abstract
Improving the luminescence collection intensity of diamond NV color center is the key to realize single photon source.A tapered diamond-like carbon(DLC)gradient antireflection film is introduced into a diamond nanocolumn color center single photon source,aiming to improve the luminescence collection intensity of NV color center from the aspects of spontaneous radiation rate and photon collection efficiency of color center.The finite difference time-domain(FDTD)method is used to simulate the composite structure optically,the effects of DLC film with different structural parameters on the photon collection intensity,emission efficiency and spontaneous radiation rate of NV color center of diamond nanopillar are investigated,and the structural parameters at the maximum collection intensity are obtained through optimization.The simulation results show that the introduction of DLC film can make the NV color centers in diamond nanopillars achieve a higher photon emission efficiency(≥1%),change the internal electric field distribution of the nanopillar,increasing the spontaneous radiation rate of color center by 16.8%,and finally increase the total photon collection intensity by 15.5%.关键词
量子光学/收集强度/时域有限差分/金刚石纳米柱NV色心/类金刚石梯度减反膜/自发辐射速率Key words
quantum optics/collection intensity/finite-difference time-domain/NV color center of diamond nanopillars/diamond-like carbon gradient antireflection film/spontaneous radiation rate分类
信息技术与安全科学引用本文复制引用
李文斌,谭心,潘超,贺占清,杨桥..DLC膜对金刚石纳米柱NV色心发光收集强度的影响[J].量子电子学报,2024,41(5):793-801,9.基金项目
国家自然科学基金(62365015,61765012),内蒙古自然科学基金(2023MS05047,2019MS05008),国家重点研发计划(2017YFF0207200,2017YFF0207203),内蒙古自治区科技创新引导项目(2017CYXD-2,KCBJ2018031),内蒙古自治区直属高校基本科研业务费项目(2023RCTD011,2023YXXS012),内蒙古科技大学青年基金项目(202/0303022006) （62365015,61765012）
