Fig. 1: Rydberg ladders and Kibble-Zurek protocols.
From: Tricritical Kibble-Zurek scaling in Rydberg atom ladders
a,b Two- and three-leg ladders that exhibit tricritical Ising and Potts points, respectively. Atoms of different colors correspond to different atomic species. The geometry is fixed (i.e., r1,2), while the Rabi frequency Ω and detuning Δ can be tuned. c The schematic phase diagram and ramping protocols. The solid (dashed) blue line denotes the second (first) order Ising/Potts transition, and a tricritical point lies in between. In Protocol I, we keep Ω fixed and ramp Δ from the disordered phase to the symmetry breaking phase, both across and near the tricritical point. In Protocol II, we consider a tangential ramping direction. The orange dot arrow refers to ramping of higher speeds, where a dynamical analog to Zamolodchikov’s c-theorem is proposed.
