Magnetic materials described by an effective Dicke model exhibit perturbatively stable ground-state squeezing near a superradiant transition, providing a resource for quantum metrology and entanglement witnessing.
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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.
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Dicke materials as a resource for quantum squeezing
Magnetic materials described by an effective Dicke model exhibit perturbatively stable ground-state squeezing near a superradiant transition, providing a resource for quantum metrology and entanglement witnessing.
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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.