Femtosecond laser micromachining for integrated quantum photonics

Abstract Integrated quantum photonics, i.e. the generation, manipulation, and detection of states light in integrated photonic chips, is revolutionizing field information all applications, from communications to computing. Although many different platforms are being currently developed, silicon photonics lithium niobate circuits, none them has shown versatility femtosecond laser micromachining (FLM) producing components a complete system, encompassing sources, reconfigurable state memories, detection. It fact evident that FLM been key enabling tool first-time demonstration devices functionalities. cannot achieve same level miniaturization other platforms, it still unique advantages for photonics. In particular, last five years, greatly expanded its range applications with several scientific breakthroughs achieved. For these reasons, we believe review article on this topic very timely could further promote development by convincing end-users great potentials technological platform stimulating more research groups direct their efforts exciting technologies.