Incomplete Detection of Nonclassical Phase-Space Distributions

Physical Review Letters
M BohmannW Vogel

Abstract

We implement the direct sampling of negative phase-space functions via unbalanced homodyne measurement using click-counting detectors. The negativities significantly certify nonclassical light in the high-loss regime using a small number of detectors which cannot resolve individual photons. We apply our method to heralded single-photon states and experimentally demonstrate the most significant certification of nonclassicality for only two detection bins. By contrast, the frequently applied Wigner function fails to directly indicate such quantum characteristics for the quantum efficiencies present in our setup without applying additional reconstruction algorithms. Therefore, we realize a robust and reliable approach to characterize nonclassical light in phase space under realistic conditions.

References

Jun 1, 1996·Physical Review. a·S Wallentowitz, W Vogel
Nov 18, 1996·Physical Review Letters·D LeibfriedD J Wineland
Aug 11, 2001·Physical Review Letters·A I LvovskyS Schiller
Dec 19, 2003·Optics Letters·Daryl AchillesIan A Walmsley
Jan 15, 2011·Physical Review Letters·Kaisa LaihoChristine Silberhorn
Jan 15, 2011·Physical Review Letters·Andreas EcksteinChristine Silberhorn
May 18, 2013·Physical Review Letters·Tim J BartleyIan A Walmsley
Jun 22, 2013·Optics Express·Georg HarderChristine Silberhorn
Nov 28, 2014·Nature Communications·Gaia DonatiIan A Walmsley
Mar 31, 2015·Physical Review Letters·Alfredo LuisWerner Vogel
May 2, 2015·Science·A Femius KoenderinkAlbert Polman
Jul 26, 2015·Physical Review Letters·J SperlingC Silberhorn
May 28, 2016·Science·Chen WangR J Schoelkopf
Sep 3, 2016·Physical Review Letters·J SperlingI A Walmsley
Jan 13, 2017·Proceedings of the National Academy of Sciences of the United States of America·Jiyong ParkHyunchul Nha

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Citations

Apr 18, 2020·Physical Review Letters·Martin Bohmann, Elizabeth Agudelo
May 15, 2020·Optics Express·Jan ProvazníkPetr Marek
Jan 25, 2020·Physical Review Letters·J SperlingI A Walmsley
Jan 16, 2019·Optics Express·Johannes TiedauChristine Silberhorn
Jan 30, 2021·Physical Review Letters·Nicola BiagiAlessandro Zavatta

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