"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.