Let’s first start with conventional computing, at the most basic premise, computers process data as 1s & 0s, 1 being On & 0 being Off. This forms the fundamental for how our computers work. But with Quantum computing, things change. Quantum superposition comes into play, where quantum computers will be in a superposition, meaning they will be 1 & 0 at the same time.
If correctly harnessed, we would see an astronomical growth in computing power. Which should be the way we go.