Researchers built a solid-state superradiant maser that generates and maintains macroscopic quantum coherence under ambient conditions. Large-scale quantum coherence in solid materials normally collapses unless cooled to very low temperatures or triggered in brief pulses. The device overcomes this limit as diamond defect spins lock their magnetic oscillations with microwave photons trapped inside a cavity.
Condensed Matter & Quantum
Matter, energy, planets, stars, and the physical rules that hold them together.
Researchers developed a machine learning model that predicts electron densities directly from physical potentials to run large quantum mechanical simulations. Standard electronic structure calculations normally require solving auxiliary electron orbitals through repeated matrix calculations that slow down drastically as systems grow. The new system bypasses those intermediate orbitals entirely by using a Fourier neural operator to map grid potentials straight to electron clouds.