Disordered atoms steer shared light pulses by matching motion and timing

A research team at the Institute of Applied Physics at TU Darmstadt has shown for the first time that atoms that are completely disordered and in constant motion can nevertheless emit jointly directed light preferentially in one direction—even though neither the atoms nor their environment exhibit a direction—and that the strength of this asymmetry can be specifically adjusted. The paper is published in the journal Physical Review Letters.