Heterostructures of two-dimensional materials offer a versatile platform to study light-matter interactions of electron and hole gases. By separating electron and hole layers with an insulator long-lived electron-hole bound states known as interlayer excitons can form. We predict that by placing an interlayer exciton in a time-reversal-symmetry-breaking chiral cavity the energy spectrum of an interlayer exciton can be reordered. As a consequence of this reordering the ground state of the interlayer exciton can be driven from an s-orbital to a p-orbital, effectively changing the symmetry of the electron-hole pair. We present a phase diagram showing the couplings and separations required for a p-orbital excitonic ground state where we predict that larger interlayer separations require higher cavity couplings. We expect these results to be relevant for angular-momentum-tunable, single photon emission physics.
@article{arxiv.2511.05751,
title = {Chiral Cavity Control of the Interlayer Exciton Energy Spectrum},
author = {Jonathan Sanchez-Lopez and Ze-Xun Lin and Di Luo and Prineha narang},
journal= {arXiv preprint arXiv:2511.05751},
year = {2025}
}