Do optical quantum chips need lithography machines? I'd like to say, no, let ASML go to hell! But instead of a lithography machine, what? The manufacture of microscopic optical path and zero devices, or inseparable from the lithography machine, or the old saying, can not use the hand disc it! Because the optical quantum chip is different from the traditional chip, more complex components need to be designed, such as laser light source, filter device, waveguide, quantum state regulation device and single photon detector.