Fig. 4: Experimental demonstration and characterisation of defect-state condensation in a chain of optically imprinted polariton condensates with an engineered defect.
From: Synthetic band-structure engineering in polariton crystals with non-Hermitian topological phases

Chain of 12 polariton condensates with a ≈ 10.2 μm and ad ≈ 9.0 μm. a Experimental real-space PL intensity distribution, b dispersion, c energy-resolved strip of real-space, d, e line profiles across energy-resolved real-space centred around the red and blue arrows in c, respectively. The horizontal solid black lines in a, c correspond to 15 μm and the normalised logarithmic colour scales are shown at the bottom of each colourmap. The gap mode is indicated by the blue arrow.