Superradiance is generated by generating coherent radiation in the
10 gigahertz (1010) to terahertz (1012) regions of the electromagnetic
spectrum. The radiation is produced by pulsing a micro crystal of a molecular magnet
in a cavity or between a pair of superconductor mirrors at Kelvin or milli-Kelvin
temperatures. The coherence and source of the radiation result from enhanced quantum
mechanical spin tunneling. Alternatively, the radiation may be obtained by moving
the crystal in and out of the field of a permanent magnet.