A major challenge in quantum optics and quantum information technology is to enhance the interaction between single photons and single quantum emitters.Highly engineered optical cavities are generally implemented requiring nanoscale fabrication precision. We demonstrate a fundamentally different approach in which disorder is used as a resource rather than a nuisance. We generate strongly The interaction between a single photon and a single quantized emitter is the core of cavity quantum electrodynamics (QED) and constitutes a node in a quantum information network (1,2). So far, cavity QED experiments have been realized with a wide range of two-level systems including atoms (3), ions (4), Cooper-pair boxes (5), and semiconductor quantum dots (6-8) coupled to photons confined in a cavity.

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Self-assembly techniques are widely used to grow ordered structures such as, for example, opal-based photonic crystals. Here, we report on photonic glasses, new disordered materials obtained via a modified self-assembling technique. These random materials are solid thin films which exhibit rich novel light diffusion properties originating from the optical properties of their building blocks. This novel material inaugurated a wide range of nanophotonic materials with fascinating applications, such as resonant random lasers or Anderson localization.