Optical analogue of the event horizon demonstrated withmicrostructured fibers

摘要

Black holes are like space-time rivers: their geometry can be viewed as if space were a moving medium rushing towards their singularities. Horizons are formed where the flow speed exceeds the speed of light such that nothing can escape anymore. Realizing this idea with ultrashort pulses in microstructured optical fibers, we performed the first experimental demonstration of an artificial event horizon in optics.