Information Theory and Quantum Physics

Mitra Pashootanizadeh, Mortaza Kokabi

There are different theories on information as Shannon's Information or Communication Theory, Semantic Theory of Information, Cybernetics Theory, Quantum Theory of Information and Quantum Information Theory, each one viewing information from a different point. In this paper researchers used the foundamental concepts of quantum physics such as Wave/Particle duality, Complementarity, Uncertainty principle, Schrödinger's cat & so on to explain the nature of information and its role in information environments & flows. These concepts were introduced sequentially and Quantum Theory of Information was interpreted eventually.

Shintaro Minagawa

Since information theory introduced a way to describe the concept of information qu antitatively and operationally, the role of information in physics is attracting increasi ng attention.Quantum information science is a field that combines physics and infor mation theory by considering information processing using physical systems that obe y quantum theory, i.e., quantum systems.

G. David Forney, Markus Grassl, Saikat Guha +4 more

Giulio Chiribella, Giacomo Mauro D’Ariano, Paolo Perinotti

After more than a century since its birth, Quantum Theory still eludes our understanding. If asked to describe it, we have to resort to abstract and ad hoc principles about complex Hilbert spaces. How is it possible that a fundamental physical theory cannot be described using the ordinary language of Physics? Here we offer a contribution to the problem from the angle of Quantum Information, providing a short non-technical presentation of a recent derivation of Quantum Theory from information-theoretic principles. The broad picture emerging from the principles is that Quantum Theory is the only standard theory of information that is compatible with the purity and reversibility of physical processes.