Ultracold Atoms (IMAGE) University of Basel Caption A cloud of ultracold atoms (red) is used to cool the mechanical vibrations of a millimeter-sized membrane (brown, in black frame). The mechanical interaction between atoms and membrane is generated by a laser beam and an optical resonator (blue mirror). Credit Tobias Kampschulte, University of Basel Usage Restrictions Give adequate attribution to the original author. 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.