Emerging Quantum Pheneomena in Nonlinear Nanophotonics: Toward New Regimes of Light-Matter Interactions

Nanophotonics is at the forefront of research and development in scalable quantum technologies,
ranging from quantum sensing to quantum computing. Traditionally, inherently weak photon-photon
and photon-atom interactions in dielectric materials pose significant challenges to fully exploiting the
potential of these platforms. However, recent advances in the fabrication of nonlinear micro-
resonators with nanometric features have allowed for the enhancement of all-optical interactions,
necessitating new approaches to generating, controlling, and measuring quantum light.

In this seminar, I will delve into unexplored regimes at the intersection of nonlinear and quantum
optics. I will begin by showcasing our latest advancements in developing integrated microresonators
in thin-film 4H-Silicon Carbide. This innovation enables nonlinear photonics, quantum optics, and
collective quantum emitter excitations on the same platform. Following this, I will present our
experimental demonstration of quadrature lattices of the quantum vacuum. This work shows how
pulses that spontaneously emerge in microresonators can generate lattice dynamics of the quantum
vacuum and how we can exert control over these dynamics.

I will then discuss the broader implications of our findings, including enhanced interactions with
quantum emitters, and ultrafast nonlinear quantum nanophotonics, which enable nonlinear
interactions at the single photon level. These outcomes pave the way toward new regimes of light-
matter interactions that are enabled on scalable photonic microchips, with transformative
implications for fundamental physics and quantum applications.