Huang Xiaoying, Horder Jake, Yamamura Karin, Wong Wei Wen, Aharonovich Igor, Wang Naiyin, Jagadish Chennupati, Tan Hark Hoe
Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems, Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2600, Australia.
Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems, School of Mathematical and Physical Sciences, Faculty of Science, University of Technology Sydney, Ultimo, New South Wales 2007, Australia.
Nano Lett. 2025 Apr 16;25(15):6318-6324. doi: 10.1021/acs.nanolett.5c01190. Epub 2025 Apr 6.
Ring resonators, enabling various quantum functionalities, are crucial components in on-chip quantum photonic integrated circuits. However, the current challenge of on-chip quantum photonics integration is the complicated nondeterministic fabrication processes that lack scalability and repeatability. To overcome these issues, we develop a bottom-up approach to deterministically grow single InAsP quantum dots in InP microrings in a single epitaxial run for on-chip single-photon emission applications. The quantum dots are incorporated into high quality factor microring cavities. The coupling of the quantum dot emission into the whispering gallery mode of the ring results in Purcell-enhanced single-photon emission. Furthermore, we engineer the emitter-cavity coupling efficiency by optimizing the whispering gallery mode spacing, demonstrating high coupling probability and multiwavelength single-photon emissions with larger rings. Our technology provides a pathway toward on-chip integrated single-photon emitters for a miniaturized quantum information processing platform.
环形谐振器能够实现各种量子功能，是片上量子光子集成电路中的关键组件。然而，目前片上量子光子集成面临的挑战是复杂的非确定性制造工艺，缺乏可扩展性和重复性。为了克服这些问题，我们开发了一种自下而上的方法，在一次外延生长过程中，在InP微环中确定性地生长单个InAsP量子点，用于片上单光子发射应用。量子点被集成到高品质因数的微环腔中。量子点发射与环的回音壁模式的耦合导致了珀塞尔增强的单光子发射。此外，我们通过优化回音壁模式间距来设计发射器 - 腔耦合效率，展示了高耦合概率以及使用更大环的多波长单光子发射。我们的技术为实现用于小型化量子信息处理平台的片上集成单光子发射器提供了一条途径。
