Speaker
Description
Magic and entanglement quantify departure of quantum systems from classical world: the former measures the deviation from stabilizer states that can be efficiently simulated classically while the latter measures non-local correlations. A proper understanding of magic in physically relevant quantum field theories is essential for identifying where quantum advantage may be realized in the early fault-tolerant quantum computing era. We calculate the gauge-invariant entanglement entropy and stabilizer Rényi entropy of the ground state of the (1+1)-dimensional SU(2) lattice gauge theory and find a crossover regime where the ground state passes from a more magic-rich regime into a regime with less magic which is also tracked by the sharpest change of both the entanglement entropy and lattice particle density.