Figure 2
From: Physical interpretation of nonlocal quantum correlation through local description of subsystems
S, E, St, and B correspond to separable, entangled, steerable, and Bell nonlocal correlation, respectively. Entanglement, steerability, and Bell nonlocal correlation are confirmed if the observed correlation \({\mathcal {P}}\) of Eq. (1) can not be explained by the theoretical models LHS–LHS, LHS–LHV, and LHV–LHV, respectively. Less assumption about the associated systems makes the correlation more nonlocal. In this work, we discriminate the degree of nonlocality under a single theoretical model, LHS–LHS with the help of proposed uncertainty relation of inequality (2). Here, the violation of the inequalities \({\mathcal {F}}_1^n\le {\mathcal {C}}_1^n\) (5), \({\mathcal {F}}_2^n\le {\mathcal {C}}_2^n\) (3) and \({\mathcal {F}}_3^n\le {\mathcal {C}}_3^n\) (4) validates entanglement, steerability and Bell nonlocal correlation, respectively.
