High-performance Sources of Multidimensionally Engineered Quantum Light Based on Monolithic Microcavity-metalens Interfaces
Abstract
The ultimate non-classic light sources for modern photonic quantum technology require on-demand generation of indistinguishable quantum light with high brightness and flexible engineering of quantum emission in multiple degrees of freedom. In this work, we present monolithic microcavity-metalens interfaces consisting of quantum-dot-micropillar single-photon sources and ultra-thin metalenses accurately aligned on opposite sides of an III-V compound semiconductor chip. The pronounced cavity quantum electrodynamics effect enabled by the micropillar cavity facilitates single-photon emission from quantum dots with simultaneous high degrees of single-photon purity, source brightness and photon indistinguishability while the multi-functional metalenses concurrently tailor quantum emission in multiple physical degrees of freedom including radiation divergence, emission directionality, polarization state and orbital angular momentum (OAM). Furthermore, high-fidelity polarization-OAM entanglement and single photons with local spin topologies are successfully generated in our integrated device. In particular, we demonstrate stable propagations of single-photon skrymions in atmospheric turbulence and reveal their topological advantages over the conventional structured quantum light. Our work advances the research fields of integrated quantum photonics and meta-optics, providing integrated high-dimensional quantum light sources for advanced photonic quantum science and technology.
Cite
@article{arxiv.2603.15391,
title = {High-performance Sources of Multidimensionally Engineered Quantum Light Based on Monolithic Microcavity-metalens Interfaces},
author = {Jiantao Ma and Dong Liu and Shunfa Liu and Jiawei Yang and Nilo Mata-Cervera and Bo Chen and Xueshi Li and Guixin Qiu and Kaixuan Chen and Hanqing Liu and Haiqiao Ni and Dunzhao Wei and Zhichuan Niu and Ying Yu and Yijie Shen and Liu Liu and Xuehua Wang and Jin Liu},
journal= {arXiv preprint arXiv:2603.15391},
year = {2026}
}
Comments
10 pages, 6 figures; To appear in eLight