Integrated photonics for scalable quantum systems: from UV nanophotonics to trapped-ion architectures

Photonic integrated circuits (PICs) offer compact and scalable solutions for trapped-ion quantum technologies. This work demonstrates photonic platforms that promise the potential integration of photonic components for light delivery and control across ultraviolet (UV) to near-infrared (NIR) wavelengths. Passive waveguides and beam-shaping structures provide precise and stable optical addressing of ions, while active elements such as modulators and switches enable dynamic, on-chip control for quantum operations. Materials like aluminum oxide (Al2O3) and aluminum nitride (AlN) are evaluated to illustrate how functionality can be tailored to spectral needs. These integrated photonic systems reduce reliance on bulky free-space optics, improve alignment stability, and support future development of compact quantum sensors, atomic clocks, and scalable quantum processors.