Quantum Properties Research Under The Ultra-strong Coupling Atoms Interact With Light Field

Quantum optics mainly uses the quantum theory of radiation to study the generation, transmission, detection, coherent statistical properties of light radiation and the fundamental physical problems in the interaction between light and matter. The main task of quantum optics is to study the various classical and nonclassical phenomena in the light field and its physical essence, to reveal the physical principles of various linear and nonlinear effects in the light field, to reveal the interaction between the light field and the material kinetic characteristics and the relationship between material structure and dynamic characteristics, to reveal the basic characteristics, principles, laws and the deep structure of photon interaction between photon and photon.Quantum informatics is a new discipline that combines quantum mechanics with classical informatics. The microcosmic system has a series of unique quantum properties that bring many new phenomena to informatics, and many new concepts, principles and methods have been developed in the aspects of information representation, processing and transmission. Quantum informatics and the development of quantum communication technology in the future of information and communication research will have a unique and unique position, will play an irreplaceable role.At present the quantum computer still uses the binary data, the corresponding quantum data, and also uses the two-level quantum system.However, with the expansion of the research field, high-dimensional quantum system has received more and more attention. As the high-dimensional quantum system has more quantum channels, it can store more information, which can improve the security of information transmission and simplify the operation of quantum logic gate. So it has potential application value in quantum information processing.In this paper, on the basis of the Rabi model of quantum optics, the nonlinear compression term is added to the interaction between atoms and light fields. The energy state of the whole system and the laws of system evolution over time are studied by using the adiabatic approximation method. In addition, this paper focuses on how to construct a high-dimensional multi-control TOFFOLI quantum gate, and the application of polarization photon and atomic and oscillator coupling model to complete the high-dimensional multi-control TOFFOLI gate physical realization.