Shaping the propagation of light in complex media

The main obstacle for optical imaging or sending information through turbid media such as paint, clouds and biological tissue is the random scattering of light. Owing to its immense complexity, process multiple has long been described by diffusion equation, which ignores interference scattered Recent developments in wavefront shaping phase recording techniques have enabled breaking limit control coherent light transport complex media, including strongly tissues multimode fibres with mode mixing. Great advances made focusing controlling transmission systems performing various tasks behind them, micro-manipulation. Here, we summarize amazing power fundamental limits scattering, lay physical foundation harness multiply-scattered communication purposes. Connections practical applications are illustrated, particular those areas covered companion articles this issue. Multiple fundamentally complicates task many require. This Review summarizes theoretical framework experimental understand these processes.