Quantum Optics Laboratory (IMAGE) University of Copenhagen - Niels Bohr Institute Caption Jean Babtiste Béguin and Jürgen Appel in the quantum optics laboratory in the basement of the Niels Bohr Institute, where they did the experiments. Credit Ola Jakup Joensen, Niels Bohr Institute Usage Restrictions Photo: Ola Jakup Joensen, Niels Bohr Institute 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.