Tag

Laser Cooling

All articles tagged with #laser cooling

science-and-technology1 year ago•3 min saved

"Quantum Ground State Acoustics: Revolutionizing Quantum Physics"

Researchers have successfully cooled sound waves in an optical fiber to near quantum ground state using laser cooling and stimulated Brillouin scattering, reducing thermal noise and potentially bridging classical and quantum mechanics. This breakthrough paves the way for utilizing long acoustic phonons in quantum technologies, with implications for quantum communications and future quantum technologies. The study, published in Physical Review Letters, demonstrates a significant reduction in temperature of a sound wave in an optical fiber, marking a promising step towards reaching the quantum ground state in waveguides and gaining deeper insights into the fundamental nature of matter.

via SciTechDaily|

#acoustics #laser-cooling #optical-fibers

science-and-technology2 years ago•3 min saved

"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.

via SciTechDaily|

#absolute-zero #laser-cooling #membrane

science-and-technology2 years ago•4 min saved

Observing Ultracold Electron Bunches in Subpicosecond Timeframes.

Researchers at Eindhoven University of Technology have demonstrated the scattering of subpicosecond electron bunches from an ultracold electron source. The source was created by photoionizing laser-cooled rubidium gas in a grating magneto-optical trap via a two-step process. The recent work highlights the value of the compact ultracold source they realized for producing ultrafast electron bunches. The findings gathered by this team of researchers could pave the way for the development of highly performing imaging techniques that could advance research in numerous fields.

via Phys.org|

#electron-bunches #imaging-techniques #laser-cooling