Kavli Affiliate: Joel E. Moore
| First 5 Authors: Yi J. Zhao, Yi J. Zhao, , ,
| Summary:
Synchronization in quantum systems has been recently studied through
persistent oscillations of local observables, which stem from undamped modes of
the dissipative dynamics. However, the existence of such modes requires
fine-tuning the system to satisfy specific symmetry constraints. We investigate
the response of spin systems that possess such oscillating modes to generic,
weak perturbations. We show that even when these perturbations break the
symmetry and lead to a single steady state, the phase correlations in the
resulting state exhibit signatures of synchronization. Our results therefore
connect the persistent oscillation notion (dynamical) and the notion based on
phase correlations (steady-state) of synchronization, which so far have been
regarded as distinct phenomena. Furthermore, we demonstrate that steady-state
synchronization in these systems can exhibit features that are absent in the
dynamical synchronization. Our work suggests robustness of synchronization and
points toward a potential unifying framework of quantum synchronization.
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