CLASSICAL AND QUANTUM INFORMATION THEORY.

Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics. Information theory lies at the heart of modern technology, underpinning all communications, networking, and data storage systems. The book "Classical and Quantum Information Theory" contains ten chapters. We examine the thermal classical and quantum correlations in an isolated quantum dot system (QDS) including the effects of different parameters in first chapter. The sharing of classical and quantum correlations via XY interaction has been investigated in second chapter. We consider the time evolution of a bipartite system whose Hilbert space is the direct product of two subspaces in third chapter. The classical and quantum fisher information in the geometrical formulation of quantum mechanics have been discussed in fourth chapter. The quantum trajectories emerging from classical phase space have been described in fifth chapter. We present a brief overview of the theory of charged particles in electromagnetic fields, and its specific implementation in the SIMLA code in sixth chapter. The impact of quantum-classical correspondence on entanglement enhancement by single-mode squeezing has been discussed in seventh chapter. In eighth chapter, we propose a new physical-mathematical model for the brain functioning. We show properties of natural atomic probabilities in ninth chapter. The fundamentals of a consistent quantum ontology have been proposed in last chapter.