Witnessing nonclassicality through large deviations in quantum optics

Witnessing nonclassicality through large deviations in quantum optics

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Nonclassical correlations in quantum optics as roneverhart.com resources for quantum computation are important in the quest for highly specialized quantum devices.Here, we put forward a methodology to witness nonclassicality of the output field from a generic quantum optical setup via the statistics of time-integrated photocurrents.Specifically, exploiting the att nighthawk hotspot thermodynamics of quantum trajectories, we express a known nonclassicality witness for bosonic fields fully in terms of the source master equation, thus bypassing the explicit calculation of the output light state.