Phys.org May 6, 2021
Quantum mechanics sets a limit for the precision of continuous measurement of the position of an oscillator. An international team of researchers (Finland, Australia) has developed a theoretical model to show that there is a way to get around the uncertainty principle. In their experiment they used two vibrating drumheads vibrating in opposite phase to each other cancelling the quantum uncertainty of the drums’ motion if the two drums are treated as one quantum-mechanical entity. Thus the researchers were able to simultaneously measure the position and the momentum of the two drumheads – which should not be possible according to the Heisenberg uncertainty principle. Breaking the rule allows them to be able to characterize extremely weak forces driving the drumheads…read more. TECHNICAL ARTICLE
Schematic of the entangled drumheads. Credit: Aalto University.