Verification of a many-ion simulator of the Dicke model through slow quenches across a phase transition
arXiv:1807.03178 · doi:10.1103/PhysRevLett.121.040503
Abstract
We use a self-assembled two-dimensional Coulomb crystal of ions in the presence of an external transverse field to engineer a simulator of the Dicke Hamiltonian, an iconic model in quantum optics which features a quantum phase transition between a superradiant/ferromagnetic and a normal/paramagnetic phase. We experimentally implement slow quenches across the quantum critical point and benchmark the dynamics and the performance of the simulator through extensive theory-experiment comparisons which show excellent agreement. The implementation of the Dicke model in fully controllable trapped ion arrays can open a path for the generation of highly entangled states useful for enhanced metrology and the observation of scrambling and quantum chaos in a many-body system.
arXiv comment6 + 5 pages, 2 + 5 figures. arXiv admin note: substantial text overlap with arXiv:1711.07392
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