Fig. 6: Coherent oscillation under imbalanced optical pumping of the direct coupler.
From: Dispersive and dissipative coupling of photon Bose-Einstein condensates
a Streak camera image of the direct coupler with off-center pumping of a single condensate (compared to the confining potential). b Integrated intensity of the individual condensate sites. An oscillation is present with a frequency of (14.5 ± 0.5) GHz resulting from the coherent superposition of the antisymmetric state (with 6 nodes) and the symmetric state (with 5 nodes). The oscillation is damped as the system evolves from a superposition of both states into the single lower-energy antisymmetric state.
