Photon chip and quantum chip are two dimensional concepts, there is no difference between strong and weak. Photonic chips use semiconductor light-emitting technology to generate a sustained laser beam that drives other silicon photonic devices. Quantum chip is to integrate quantum circuits on the substrate, and then carry the function of quantum information processing.
Photonic chips can combine the light-emitting properties of indium phosphide and the optical routing capabilities of silicon into a single hybrid chip. When a voltage is applied to indium phosphide, light enters the waveguide of the silicon chip, producing a continuous laser beam that drives other silicon photonic devices. This silicon wafer-based laser technology could make photonics more widely used in computers, as large-scale silicon-based manufacturing techniques can dramatically reduce costs.
Photon chip is fast, quantum chip is good security