Hermite expansions enable closed-form computation and optimization of entanglement harvesting negativity for arbitrary temporal profiles, increasing harvested entanglement by orders of magnitude beyond second-order perturbation theory.
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A protocol with lattices of gapless detectors reconstructs the field's two-point function from detector correlations while correcting for finite-size effects via multipole expansion.
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Optimization of entanglement harvesting with arbitrary temporal profiles: the limit of second order perturbation theory
Hermite expansions enable closed-form computation and optimization of entanglement harvesting negativity for arbitrary temporal profiles, increasing harvested entanglement by orders of magnitude beyond second-order perturbation theory.
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Non-perturbative measurements of two-point functions in quantum field theory
A protocol with lattices of gapless detectors reconstructs the field's two-point function from detector correlations while correcting for finite-size effects via multipole expansion.