Chaos by Magic

Understand

There is a property of a quantum state called magic.

• It measures how difficult for a classical computer to simulate the state.
• In this paper, we study magic of states in the integrable and chaotic regimes of the higher-spin generalization of the Ising model through two quantities called "Mana" and "Robustness of Magic" (RoM).
• We find that in the chaotic regime, Mana increases monotonically in time in the early-time region, and at late times these quantities oscillate around some non-zero value that increases linearly with respect to the system size.