Analytic expressions for the two-qubit mean-force Gibbs state show that reservoir-mediated entanglement is highest at low temperature, non-monotonic in coupling strength, and can be enhanced by broadening the reservoir spectral density.
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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.
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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Reservoir-mediated spin entanglement in the mean-force Gibbs state
Analytic expressions for the two-qubit mean-force Gibbs state show that reservoir-mediated entanglement is highest at low temperature, non-monotonic in coupling strength, and can be enhanced by broadening the reservoir spectral density.
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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.