NatureMonolithic 3D integration of tantalum pentoxide nonlinear photonicsGrant M. BrodnikGrisha SpektorLindell M. WilliamsJizhao ZangAlexa R. CarolloAtasi DanJennifer A. BlackDavid R. CarlsonScott B. Papp2026-04-15Full textDOI https://doi.org/10.1038/s41586-026-10379-w