A harmonically trapped detector's transition probabilities encode the gravitational field's two-time correlation function, reproducing classical behavior for coherent states but showing non-replicable non-linear time dependence for squeezed states under stationary conditions.
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Generalizing primordial gravitational waves to a three-mode Bogoliubov transformation yields classical behavior via quantum discord for large squeeze parameters when only two of three modes are considered, while the quantum Poincare sphere shows non-classicality for positive squeeze or nonzero cosθ,
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Quantum Response of a Harmonically Trapped Detector to Classical and Non-classical Gravitational Fields
A harmonically trapped detector's transition probabilities encode the gravitational field's two-time correlation function, reproducing classical behavior for coherent states but showing non-replicable non-linear time dependence for squeezed states under stationary conditions.
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Non-classicality of Primordial Gravitational Waves in Three-mode Representation Through Quantum Poincare Sphere
Generalizing primordial gravitational waves to a three-mode Bogoliubov transformation yields classical behavior via quantum discord for large squeeze parameters when only two of three modes are considered, while the quantum Poincare sphere shows non-classicality for positive squeeze or nonzero cosθ,