Acoustic Black Hole in a Stationary Hydrodynamic Flow of Microcavity Polaritons
Acoustic Black Hole in a Stationary Hydrodynamic Flow of Microcavity Polaritons
We report an experimental study of superfluid hydrodynamic effects in a one-dimensional polariton fluid flowing along a laterally patterned semiconductor microcavity and hitting a micron-sized engineered defect. At high excitation power, superfluid propagation effects are observed in the polariton dynamics, in particular, a sharp acoustic horizon is formed at the …