Crystals of Quantum and Nonlinear Optics: Studies . by A. A. Blistanova is a unique and in-depth study in the field of quantum and nonlinear optics, which will become an indispensable resource for both students and professionals working in this exciting scientific field. This manual not only highlights theoretical aspects, but also offers practical examples, making it ideal for those seeking to understand complex concepts and put them into practice. The book covers a wide range of topics related to crystals and their optical properties, including the interaction of light with matter at the quantum level. The author examines in detail such phenomena as nonlinear optics, optical properties of crystals, as well as their application in modern technologies. Readers will be able to learn about how crystals can be used to create new optical devices, such as lasers, photonic crystals and other elements that play a key role in the development of optics and photonics. This tutorial will be especially useful for undergraduate and graduate students of physics, materials science and engineering, as well as for researchers engaged in research in optics and photonics. The book is suitable for readers with different levels of training, as the author carefully explains complex concepts, making them accessible to understanding. However, it also contains fairly deep and advanced topics, allowing more experienced readers to delve into the details and expand their knowledge. The topics raised in the book are of great importance to the modern scientific community. Quantum and nonlinear optics are areas that are actively developing and finding application in such areas as telecommunications, medicine, information technology and many others. Understanding these topics can open new horizons for innovative research and development, making the book particularly relevant in light of current scientific trends. Style A. A. Blistanova is distinguished by clarity and logical presentation, which allows the reader to easily follow the course of the author’s thoughts. He skillfully combines theory with practical examples, which makes the material more clear and understandable. In addition, Blistanov is known for his other work in the field of physics, which confirms his authority and deep knowledge in this field. His previous publications have also gained recognition among the scientific community, making this book even more valuable to readers. If you are interested in topics such as quantum physics, optics, photonics or just want to expand your knowledge in the field of modern technologies, “Crystals of quantum and non-linear optics” will be a real find for you. This guide will not only enrich your knowledge, but also inspire new research and discoveries. Do not miss the opportunity to immerse yourself in the world of crystals and their amazing properties that open doors to the future of science and technology.