John Loudon's Quantum Theory of Light is a concise, rigorous treatment of quantum electrodynamics at the level of nonrelativistic quantum optics. It presents the quantization of the electromagnetic field, photon states, coherent and squeezed states, and atom–field interactions with emphasis on physical intuition and calculational tools used in quantum optics.
is available for borrowing or download at the Internet Archive The 3rd Edition loudon quantum theory of light pdf link