Generalized Dicke nonequilibrium dynamics in trapped ions
Genway, Sam and Li, Weibin and Ates, Cenap and Lanyon, Benjamin P. and Lesanovsky, Igor (2014) Generalized Dicke nonequilibrium dynamics in trapped ions. Physical Review Letters, 112 (2). 023603. ISSN 0031-9007
Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.112.023603
We explore trapped ions as a setting to investigate nonequilibrium phases in a generalized Dicke model of dissipative spins coupled to phonon modes. We find a rich dynamical phase diagram including superradiantlike regimes, dynamical phase coexistence, and phonon-lasing behavior. A particular advantage of trapped ions is that these phases and transitions among them can be probed in situ through fluorescence. We demonstrate that the main physical insights are captured by a minimal model and consider an experimental realization with Ca+ ions trapped in a linear Paul trap with a dressing scheme to create effective two-level systems with a tunable dissipation rate.
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