Quantum theory of light-matter interaction : fundamentals

Hannah Riley

Pavel A Apanasevich

Alina Saleem, Iqra Afzal, Yasir Javed +1 more

Galina A. Nemova

"The interaction of light and matter has long history. It evolved from the ancient corpuscular theory, to wave theory, and finally to the quantum theory. Matter is composed of charged particles, among them positively charged nucleus surrounded by electrons that are in motion. Light is an oscillating electromagnetic wave. But light is also particles (photons). The primary objective of this Field Guide to Light-Matter Interaction is to provide the reader with the basic principles of light and matter interaction using classical, semiclassical, and quantum theories. Within this Field Guide, you will find formulae and descriptions of phenomena that are fundamental for an understanding of the present state of the art of light-matter interaction"--

V.A.G. Rivera, O. B. Silva, Yannick Ledemi +2 more

T U Jeevitha

Abstract: An extensive review of the quantum theory of light-matter interaction is given in this chapter, beginning with its fundamental ideas and historical development. It covers the quantization of the electromagnetic field, atomic models, and important interaction Hamiltonians, including both semi-classical and completely quantum treatments. The role of vacuum fluctuations and fundamental processes like spontaneous and induced emission are examined. Quantum coherence, entanglement, decoherence, and its formal representation using master equations are also covered in this chapter. Modern applications such lasers, quantum sensors, and quantum communication systems are highlighted. The significance of light-matter interaction in furthering quantum science and technology is emphasized in the chapter's conclusion, which also discusses current research trends and future directions. Keywords: Laser, cryptography, Electromagnetic, Quantum, Atomic.