Journal of the Optical Society of America B, Accepted
Geol Moon, Jihyun Kim, Wonho Jhe
We experimentally demonstrate vibration phase reversal transition in a discrete time-translational symmetry broken cold atomic system by the application of a pulsed bias-field opposite to the existing phase of the symmetry-broken vibrational state.
The reversal transition depends on the strength hp and the duration ∆t of the applied pulse, Consequently, we obtain a hp − ∆t phase boundary with a divergent relaxation time τ due
to the critical slowing down behavior.
Interestingly, the ependence of the dynamic phase boundary and relaxation time on the noise induced switching rate implies that the system is out of equilibrium, but not in the
Ising model of a spin system.