Multicomponent polariton superfluidity in the optical parametric oscillator regime
Multicomponent polariton superfluidity in the optical parametric oscillator regime
Superfluidity, which is the ability of a liquid or gas to flow with zero viscosity, is one of the most remarkable implications of collective quantum coherence. In equilibrium systems such as liquid ${}^{4}\mathrm{He}$ and ultracold atomic gases, superfluid behavior conjugates diverse yet related phenomena, such as a persistent metastable flow …