What's the difference between photonic and superconducting quantum computers?

[FinnHalliday]

I keep hearing about different types of quantum computers but nobody explains them in plain terms. What actually separates photonic quantum from superconducting quantum and which one is winning right now?

[Wizard]

Superconducting qubits use circuits cooled to near absolute zero. They manipulate quantum states using microwave pulses. The advantage is mature technology and established control methods. Downside is extreme cooling requirements cost complexity and error rates scale badly with qubit count