Meta-cavity Quantum Electrodynamics
Abstract
Cavity quantum electrodynamics (cQED) harnesses light-matter interactions to produce nonclassical light states. However, a fundamental challenge lies in simultaneously achieving Purcell enhancement and tailored wavefront control within a single cavity, due to conflicting resonator requirements. Here, we overcome this limitation by demonstrating triggered single-photon emission with customizable wavefronts from semiconductor quantum dots embedded in geometric-phase metacavities. These monolithic devices - only 200 nm thick - deliver Purcell-enhanced emission alongside spin-momentum-locked radiation, vortex beams, and holographic patterns. The meta-atom lattice provides high-Q optical confinement, while spatially modulated orientations enable efficient outcoupling of photons with designed states. This work establishes a new paradigm for intrinsically multiplexing metasurface-based wavefront shaping with cQED, enabling high-performance quantum light sources from subwavelength-scale monolithic platforms.
Cite
@article{arxiv.2603.09118,
title = {Meta-cavity Quantum Electrodynamics},
author = {Xueshi Li and Ziwei Wang and Yan Chen and Dong Liu and Kaili Xiong and Guangfeng Wang and Jiantao Ma and Ying Yu and Jiawei Wang and Zhanling Wang and Xiao Li and Xianfeng Chen and Erez Hasman and Bo Wang and Jin Liu and Tian Jiang},
journal= {arXiv preprint arXiv:2603.09118},
year = {2026}
}