Quantum systems evolve smoothly and reversibly over time according to the Schrödinger equation, meaning information is never truly lost in a closed system.
In the classical world, information is tangible, definite, and strictly bound by deterministic or probabilistic laws. Information Dynamics: In Classical and Quantum ...
The fundamental unit is the bit, representing a strict 0 or 1 . Quantum systems evolve smoothly and reversibly over time