Witnessing nonclassicality through large deviations in quantum optics
- Authors: Cilluffo, Dario; Buonaiuto, Giuseppe; Lorenzo, Salvatore; Palma, Gioacchino Massimo; Ciccarello, Francesco; Carollo, Federico; Lesanovsky, Igor
- Publication year: 2020
- Type: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/486148
Abstract
Nonclassical correlations in quantum optics as 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 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.