Probing statistical properties of Anderson localization with quantum   emitters
  Wave propagation in disordered media can be strongly modified by multiple scattering and wave interference. Ultimately the so-called Anderson-localized regime is reached when the waves become strongly confined in space. So far, Anderson localization of light has been probed in transmission experiments by measuring the intensity of an external light source after propagation through a disordered medium. However, discriminating between Anderson localization and losses in these experiments remains a major challenge. Here we present an alternative approach where we use quantum emitters embedded in disordered photonic crystal waveguides as light sources. Anderson-localized modes are efficiently excited and the analysis of the photoluminescence spectra allows to explore their statistical properties paving a way for controlling Anderson localization in disordered photonic crystals. 
Stephan Smolka, Henri Thyrrestrup, Luca Sapienza, Tau B. Lehmann,   Kristian R. Rix, Luis S. Froufe-P\'erez, Pedro D. Garc\'...
quant-ph cond-mat.dis-nn cond-mat.mes-hall physics.optics