Atomic clocks use the natural oscillations of atoms to keep time. In a strontium atomic clock, a laser beam interacts with strontium atoms, causing them to vibrate at a specific frequency. This frequency is used to define the second.
The laser used to read the oscillation of atoms in atomic clocks heats up the atoms. Hot atoms escape the clock, which reduces precision. To maintain accuracy, atomic clocks constantly need to be replaced with fresh atoms.
Superradiance is a quantum phenomenon where a group of atoms emit light together. Researchers are exploring using superradiance to read the oscillation of atoms in atomic clocks. This method would heat the atoms minimally, potentially improving precision.
Cold Atoms, Hot Potential: Revolutionizing Atomic Clocks The Quantum Leap: Superradiance and the Future of Time