A recent study published in Physical Review Letters has revealed that there are theoretical limits to quantum clocks, making them impossible to build. Quantum clocks are clocks that exploit the laws of quantum mechanics to measure time more precisely than conventional clocks. The study, conducted by a team of physicists from the University of California, Los Angeles (UCLA), found that no matter how much technology advances, it would be impossible to build a quantum clock that is completely accurate. This means that, despite the fact that quantum clocks could potentially be more accurate than existing clocks, they will never be able to measure time with absolute precision. The researchers explain that this is due to the fundamental uncertainty principle in quantum mechanics, which states that the more precisely you measure a particle, the more its position and momentum become uncertain.

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source: Phys.org