Limits for quantum computers: Perfect clocks are impossible

It is becoming increasingly easier to carry out calculations with quantum computers. However, calculations show that there are fundamental limits - namely the quality of the clock used. There are different ideas about how quantum computers could be built. But they all have one thing in common: you use a quantum physical system - for example individual atoms - and change their state by exposing them to very specific forces for a specific time. However, this means that in order to be able to rely on the quantum computing operation delivering the correct result, you need a clock that is as precise as possible. But here you run into problems: perfect time measurement is impossible. Every clock has two fundamental properties: a certain precision and a certain time resolution.