A regularized variational method for counterdiabatic driving is developed for the quantum Rabi model, yielding two CD terms coupling the atom to field quadratures and enabling Floquet implementation across strong to deep-strong regimes.
Ashhab, Superradiance transition in a system with a single qubit and a single oscillator, Phys
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A cavity magnonic system with YIG sphere uses the sign of the magnon Kerr coefficient to produce nonreciprocal SQPT with different critical drive strengths for K>0 versus K<0.
Superradiant phase transition in the anisotropic Rabi model arises from competition among three Hamiltonian patterns and is equivalently simulated by a parametrically-driven Jaynes-Cummings model where excitation energies vanish at criticality.
citing papers explorer
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Regularized Counterdiabatic Driving for the Quantum Rabi Model
A regularized variational method for counterdiabatic driving is developed for the quantum Rabi model, yielding two CD terms coupling the atom to field quadratures and enabling Floquet implementation across strong to deep-strong regimes.
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Nonreciprocal superradiant quantum phase transition induced by the magnon Kerr effect
A cavity magnonic system with YIG sphere uses the sign of the magnon Kerr coefficient to produce nonreciprocal SQPT with different critical drive strengths for K>0 versus K<0.
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Dissecting the superradiant phase transition in the anisotropic Rabi model: Pattern competition and cavity-QED simulation
Superradiant phase transition in the anisotropic Rabi model arises from competition among three Hamiltonian patterns and is equivalently simulated by a parametrically-driven Jaynes-Cummings model where excitation energies vanish at criticality.