The definition of quantum theory - Part II

Quantum physics is extremely successful in describing nature, but it has many counter-intuitive features. In textbooks, quantum theory is often defined by a set of mathematical axioms. What is the physical intuition behind them? This is the second in a series of three videos exploring the axioms that define quantum physics.

In this video, part II, we'll find out about the definition of quantum theory in the framework of "General probabilistic theories".