New Math Makes Scientists More Certain About Quantum Uncertainties

New statistical calculations suggest the fundamental quantum limits

of some sensitive measurements may have been off by a factor of pi

By Mark Anderson , 11 Feb 2020

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The practical Heisenberg limits in measuring some quantities

up to the ultimate quantum sensitivity may be larger than

expected—by a factor of pi.

This new finding would, according to physicist Wojciech Górecki

of the University of Warsaw in Poland, represent “an impediment

compared to previous expectations.”

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As Werner Heisenberg famously theorized in 1927, the product

of uncertainties of these two observables can never dip below a

very small number equal to Planck’s constant divided by four times pi (h/4π).

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https://spectrum.ieee.org/nanoclast/sem ... ertainties

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