"Revolutionary Laser Cooling Technique Achieves Near Absolute Zero on Tiny Membrane"

Scientists from the University of Basel have developed a technique to cool a small membrane to temperatures close to absolute zero using laser light. By using a coherent feedback loop, the researchers were able to dampen and cool the thermal vibrations of the membrane without making any measurements, avoiding disturbances caused by quantum state changes. The membrane was cooled to 480 micro-Kelvin, less than a thousandth of a degree above absolute zero. This breakthrough could have applications in highly sensitive sensors, such as atomic force microscopes, and pave the way for creating squeezed states of the membrane for even higher measurement accuracy.