TY  - JOUR
AU  - Guo, J. J.
AU  - Sun, F. X.
AU  - Zhu, D. Q.
AU  - Gessner, M.
AU  - He, Q. Y.
AU  - Fadel, M.
PY  - 2023
DA  - 2023//
TI  - Detecting Einstein-Podolsky-Rosen steering in non-Gaussian spin states from conditional spin-squeezing parameters
T2  - Phys. Rev. A
JO  - Physical Review A
SP  - 012435
EP  - 7pp
VL  - 108
IS  - 1
PB  - Amer Physical Soc
AB  - 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.
SN  - 2469-9926
UR  - https://arxiv.org/abs/2106.13106
UR  - https://doi.org/10.1103/PhysRevA.108.012435
DO  - 10.1103/PhysRevA.108.012435
LA  - English
N1  - WOS:001130449100004
ID  - Guo_etal2023
ER  -