ELI5: How do quantum computers work

Quantum computers are like super-powered coins that can be both heads and tails at the same time, helping them solve tricky problems much faster than regular computers.

Imagine you have a regular coin, like a penny. It can only be heads or tails, right? A regular computer is like that penny; it uses bits, which are either a 0 or a 1.

Now, imagine a magic coin that can be spinning in the air. While it's spinning, it's both heads and tails at the same time! A quantum computer uses qubits, which are like that spinning coin. They can be 0, 1, or both at the same time thanks to something called superposition.

Think about finding your way through a maze.

• A regular computer tries each path one by one. It checks path A, then path B, then path C, and so on until it finds the right one.
• A quantum computer, because of superposition, can explore all the paths at the same time! It's like having a magic person that can be in all the maze's paths simultaneously.

• Qubits can be entangled too. This helps the quantum computer work together and solve problems more efficiently.