Researchers (IMAGE) University of Copenhagen - Niels Bohr Institute Caption Jan Thomsen, associate professor and group leader of The Group for Ultra Cold Atoms at the Niels Bohr Institute, and Bjarke Takashi Røjle Christensen, Ph.D. student are shown. Jan Thomsen and Bjarke Christensen have worked with the experiments on the quantum frequency discriminators. 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.