A general form of a distributed feedback control algorithm based on the speed-gradient method is developed. The goal of the control is to achieve nonlinear wave localization. It is shown by example of ...

Features that are even 100 times smaller than the wavelength can still be sensed by light, a new experiment shows. We cannot see atoms with the naked eye because they are so small relative to the ...

The way light moves around inside an optical microcavity provides an exciting opportunity to explore the connection between classical and quantum physics. This field of research is known as quantum ...