Open AccessDetection of genuine tripartite entanglement and steering in hybrid optomechanics
Author(s) -
X. D. Yu,
Feng-Xiao Sun,
M. Wang,
Qihuang Gong,
Qiongyi He
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.030104
Subject(s) - quantum entanglement , optomechanics , physics , quantum mechanics , robustness (evolution) , quantum network , quantum , quantum sensor , ghost imaging , noise (video) , quantum technology , quantum correlation , quantum optics , multipartite , quantum information science , optics , quantum discord , computer science , open quantum system , biochemistry , chemistry , artificial intelligence , image (mathematics) , gene
Multipartite quantum entanglement is a key resource for ensuring security in quantum network. We show that by using a unified parameter in terms of reduced noise variances one can determine different types of tripartite entanglement of a given state generated in a hybrid optomechanical system, where an atomic ensemble is located inside a single-mode cavity with a movable mirror, with different thresholds for each type. In particular, the special quantum states which allow both entanglement and steering genuinely shared among atom-light-mirror modes can be observed, even though there is no direct interaction between the mirror and the atomic ensemble. We further show the robustness against mechanical thermal noise and damping, the relaxation time of atomic ensemble, as well as the effect of gain factors involved in the criteria. Our analysis provides an experimentally achievable method to determine the type of tripartite quantum correlation in a way.