Relaxation of an Isolated Dipolar-Interacting Rydberg Quantum Spin System
Relaxation of an Isolated Dipolar-Interacting Rydberg Quantum Spin System
How do isolated quantum systems approach an equilibrium state? We experimentally and theoretically address this question for a prototypical spin system formed by ultracold atoms prepared in two Rydberg states with different orbital angular momenta. By coupling these states with a resonant microwave driving, we realize a dipolar $XY$ spin-$1/2$ …