  Superradiance and subradiance occur in quantum optics when the emission rate
of photons from multiple atoms is enhanced and diminished, respectively, owing
to interaction between neighboring atoms. We here demonstrate a classical
analog thereof in a theoretical model of droplets walking on a vibrating bath.
Two droplets are confined to identical two-level systems, a pair of wells
between which the drops may tunnel, joined by an intervening coupling cavity.
The resulting classical superradiance is rationalized in terms of the system's
non-Markovian, pilot-wave dynamics.
