Atomic vapor cell (IMAGE) University of Warsaw, Faculty of Physics Caption Artist's impression of Rydberg atoms converting a microwave field into an optical beam (Source: M. Mazelanik, University of Warsaw) Credit M. Mazelanik, University of Warsaw Usage Restrictions Credit must be given to the creator. License CC BY 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.