Physicists have used entanglement to ‘stretch’ the uncertainty principle, improving quantum measurements

Almost a century ago, German physicist Werner Heisenberg realized the laws of quantum mechanics placed some fundamental limits on how accurately we can measure certain properties of microscopic objects.
However, the laws of quantum mechanics can also offer ways to make measurements more accurate than would otherwise be possible.
In new research published in Nature Physics, we have outlined a way to achieve more accurate measurements of microscopic objects using quantum computers. This could prove useful in a huge range of next-generation technologies, including biomedical sensing, laser ranging and quantum communications.
We were also able to push beyond the limits of a variation of Heisenberg’s “uncertainty principle” in certain circumstances, suggesting different uncertainty principles may be necessary in different scenarios.
Physicists have used entanglement to ‘stretch’ the uncertainty principle, improving quantum measurements