%0 Journal Article
%T Detecting Einstein-Podolsky-Rosen steering in non-Gaussian spin states from conditional spin-squeezing parameters
%A Guo, J. J.
%A Sun, F. X.
%A Zhu, D. Q.
%A Gessner, M.
%A He, Q. Y.
%A Fadel, M.
%J Physical Review A
%D 2023
%V 108
%N 1
%I Amer Physical Soc
%@ 2469-9926
%G English
%F Guo_etal2023
%O WOS:001130449100004
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5905), last updated on Thu, 01 Feb 2024 07:57:01 +0000
%X We present an experimentally practical method to reveal Einstein-Podolsky-Rosen (EPR) steering in non-Gaussian spin states by exploiting a connection to quantum metrology. Our criterion is based on the quantum Fisher information, and uses bounds derived from generalized spin-squeezing parameters that involve measurements of higher-order moments. This leads us to introduce the concept of conditional spin-squeezing parameters, which quantify the metrological advantage provided by conditional states, as well as detect the presence of an EPR paradox.
%R 10.1103/PhysRevA.108.012435
%U https://arxiv.org/abs/2106.13106
%U https://doi.org/10.1103/PhysRevA.108.012435
%P 012435-7pp