These outcomes trace at the potential for paradigm-shifting optical quantum units based mostly not on standard, difficult-to-scale elements like waveguides and beam splitters, and even prolonged optical microchips, however as an alternative on error-resistant metasurfaces that provide a bunch of benefits: designs that don’t require intricate alignments, robustness to perturbations, cost-effectiveness, simplicity of fabrication, and low optical loss. Broadly talking, the work embodies metasurface-based quantum optics which, past carving a path towards room-temperature quantum computer systems and networks, might additionally profit quantum sensing or supply “lab-on-a-chip” capabilities for basic science.