What are quantum error rates?

Quantum error rates tell us how often mistakes happen when we use quantum computers to solve problems.

Imagine you're playing a game where you have to pass a message from one friend to another, but sometimes the message gets mixed up. That’s like what happens in quantum computing, instead of just letters or numbers, we’re passing tiny bits of information called qubits, and sometimes they get confused along the way.

In a normal computer, errors are like when you whisper a secret to your friend, and they say it back wrong. But with quantum computers, the confusion is more complicated, it's like playing the game with a lot of friends at once, and each one might mishear or mumble something different.

If too many mistakes happen, the answer we get from the quantum computer could be completely wrong. So scientists measure how often these errors occur, that’s the quantum error rate. Lower error rates mean the computer is smarter at solving problems without getting confused.