Extended Data Fig. 4: Quantum phase transition and revival.
From: Observation of gauge invariance in a 71-site Bose–Hubbard quantum simulator
Over 240 ms, we ramp the mass as follows: first, from negative to positive; second, from positive to negative, back to the symmetry-unbroken charge-proliferated phase. Error bars, s.d. The recovery of the atoms on even sites indicates the reversibility of this phase transition. The solid curve is a guide for the eye.
