Comment by anthony_romeo

As also a non-expert, I can add that the superposition and entanglement of qubits are performed using gates as in classical computing. There’s the Hadamard gate which takes two particles outputs a quantum superposition of the particles. Passing the result of this into a controlled-not gate, or CNOT, entangles the particles and induces them into a Bell state. From there, calculations are performed until some sort of measurement, wherein the entangled particles collapse into one possible definitive state.