Bose-Einstein Condensation of Excitons and Biexcitons: And Coherent Nonlinear Optics with ExcitonsBose Einstein condensation of excitons is a unique effect in which the electronic states of a solid can self organize to acquire quantum phase coherence. The phenomenon is closely linked to Bose Einstein condensation in other systems such as liquid helium and laser cooled atomic gases. Covering theoretical aspects as well as recent experimental work, the book provides a comprehensive survey of the field. After introducing the relevant basic physics of