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We present experimental evidence of photon droplets in an attractive(focusing) nonlocal nonlinear medium. Photon droplets are self-bound,finite-sized states of light that are robust to size and shape perturbationsdue to a balance of competing attractive and repulsive forces. It has recentlybeen shown theoretically, via a multipole expansion of the nonlocalnonlinearity, that the self-bound state arises due to competition between thes-wave and d-wave nonlinear terms, together with diffraction. The theoreticalphoton droplet framework encompasses both a soliton-like stationary groundstate and the non-soliton-like dynamics that ensue when the system is displacedfrom equilibrium, i.e. driven into an excited state. We present numerics andexperiments supporting the existence of these photon droplet states andmeasurements of the dynamical evolution of the photon droplet orbital angularmomentum.

Observation of photon droplets and their dynamics