Clearer visibility of the Hong-Ou-Mandel effect with a correlation function based on rates rather than intensities

Krzysztof Rosołek , Kamil Kostrzewa , Arijit Dutta , Wiesław Laskowski , Marcin Wieśniak , Marek Żukowski


We test ideas put forward, e.g., by Żukowski et al. [M. Żukowski et al., Phys. Rev. A 95, 042113 (2017)], which suggest that using rates in quantum optics can lead to better indicators of nonclassicality for states of quantum optical fields with undefined photon numbers. By rate we mean the ratio of registered photons in a given detector to the total number of detected photons in all detectors in a run of the experiment. For the Hong-Ou-Mandel effect for parametric down-conversion fields, we show that by using two detector correlation functions, which are defined in terms of averages of products of measured rates, rather than usual intensities, one can observe nonclassical visibilities beyond 1/2 for significantly higher pump rates. At such rates we already have the partially stimulated emission, which leads to significant amplitudes for multiple pairs production, still the approach allows us to clearly see the nonclassical dip. We consider both the perfect and imperfect detection efficiency.
Author Krzysztof Rosołek IFTiA
Krzysztof Rosołek,,
- Institute of Theoretical Physics and Astrophysics
, Kamil Kostrzewa IFTiA
Kamil Kostrzewa,,
- Institute of Theoretical Physics and Astrophysics
, Arijit Dutta IFTiA
Arijit Dutta,,
- Institute of Theoretical Physics and Astrophysics
, Wiesław Laskowski IFTiA
Wiesław Laskowski,,
- Institute of Theoretical Physics and Astrophysics
, Marcin Wieśniak II
Marcin Wieśniak,,
- Institute of Informatics
, Marek Żukowski IFTiA
Marek Żukowski,,
- Institute of Theoretical Physics and Astrophysics
Other language title versions
Journal seriesPhysical Review A, ISSN 1050-2947
Issue year2017
Publication size in sheets0.5
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 35.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.925 (2) - 2016=2.716 (5)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.