Purcell enhancement of a deterministically coupled quantum dot in an SU-8 laser patterned photonic crystal heterostructure
Purcell enhancement of a deterministically coupled quantum dot in an SU-8 laser patterned photonic crystal heterostructure
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DOI：
10.1063/5.0018673
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发表时间：
2020-07
影响因子：
4
通讯作者：
H. Shao;Guanhua Ying;Stephen A. Lennon;Frederic S. F. Brossard;J. Griffiths;Luke P. Nuttall;Vitaly Osokin;Edmund Clarke;Huan He;Robert A. Taylor
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文献类型：
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作者：
H. Shao;Guanhua Ying;Stephen A. Lennon;Frederic S. F. Brossard;J. Griffiths;Luke P. Nuttall;Vitaly Osokin;Edmund Clarke;Huan He;Robert A. Taylor
利用腔量子电动力学增强单光子源的辐射是许多量子光学技术中实现实用辐射源的关键。在这项工作中，我们提出了一个灵活和方便的腔制作过程，写一个SU-8微带到光子晶体波导确定性，其中InGaAs/GaAs量子点作为发射器。条形腔在具有选定发射波长的量子点的位置处被激光图案化。显微光致发光的研究进行，这表明了一个增强的发射强度的一个因素为2.1与弱耦合到一个单一的量子点，和时间分辨的光致发光进一步显示了一个珀塞尔增强因子为2.16。因此，制造过程被验证为将确定性腔耦合引入到所选量子点的可靠配方。
Enhancement of single photon source emission through cavity quantum electrodynamics is key to the realization of applicable emitters in many quantum optics technologies. In this work, we present a flexible and convenient cavity fabrication process that writes a SU-8 microstrip onto a photonic crystal waveguide deterministically, in which InGaAs/GaAs quantum dots are present as emitters. The strip cavity is laser patterned at the location of a quantum dot with a chosen emission wavelength. Micro-photoluminescence studies are undertaken, which demonstrate an enhanced emission intensity by a factor of 2.1 with weak coupling to a single quantum dot, and time-resolved photoluminescence further shows a Purcell enhancement factor of 2.16. The fabrication process is, thus, verified as a reliable recipe to introduce deterministic cavity coupling to a chosen quantum dot.