Solid State Theory Meets Photonics: The Curious Optical Properties of Photonic Crystals -- Circular Photo-Galvanic and Spin-Galvanic Effects -- Nano-Photoluminescence -- Spectral Trimming of Photonic Crystals -- Full Counting Statistics in Quantum Contacts -- Quantum Dots Attached to Ferromagnetic Leads: Exchange Field, Spring Precession, and Kondo Effect -- Transport of Interaction Electrons T…