Inaccurate time measurement (top left) means that the quantum states (shown on the lines on the right) are no longer known exactly.
Inaccurate time measurement ( top left ) means that the quantum states (shown on the lines on the right) are no longer known exactly. It is becoming increasingly possible to carry out calculations with quantum computers. However, calculations by TU Wien show that there are fundamental limits - namely the quality of the clock used . There are different ideas on how to build quantum computers. 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 very 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 this is where you run into problems: perfect time measurement is impossible.
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