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.
Witnessing nonclassicality through large deviations in quantum optics / D., Cilluffo; G., Buonaiuto; S., Lorenzo; G., Massimo Palma; F., Ciccarello; Carollo, F; I., Lesanovsky. - In: PHYSICAL REVIEW RESEARCH. - ISSN 2643-1564. - 2:2(2020), pp. 1-5. [10.1103/PhysRevResearch.2.023078]
Witnessing nonclassicality through large deviations in quantum optics
CAROLLO F;
2020
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.| File | Dimensione | Formato | |
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