There has been a long-standing search for quantum signatures of classical chaos. Here, an atomic system that can be used to study quantum chaos — the quantum kicked top — is experimentally realized and directly observed to reveal dynamics in quantum phase space that have a chaotic classical counterpart. Clear differences are noted in the sensitivity to perturbation in chaotic versus regular regimes and dynamical entanglement is proposed as a signature of chaos.
- S. Chaudhury
- A. Smith
- P. S. Jessen
