Eugene Polzik, Niels Bohr Institute (IMAGE) University of Copenhagen - Niels Bohr Institute Caption Professor Eugene Polzik is in the quantum optics laboratory, where the research group has carried out experiments that improve the measurements of ultra-small magnetic fields. In order to get an accurate measurement of the ultra-small magnetic fields, they have devised a way to almost get around the limits of quantum physics. Credit (Credit: Ola Jakup Joensen, NBI) Usage Restrictions (Credit: Ola Jakup Joensen, NBI) License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.