Anything can be turned into a product. The appeal of chip-based technologies such as superconducting qbits or integrated photonics is that one could at least in

Anything can be turned into a product. The appeal of chip-based technologies such as superconducting qbits or integrated photonics is that one could at least in theory scale them to orders of magnitude larger sizes. This is simply not possible with macroscopic mirrors and beam splitters on steel posts.