  A Werner state, which is the singlet Bell state affected by white noise, is a
prototype example of states, which can reveal a hierarchy of quantum
entanglement, steering, and Bell nonlocality by controlling the amount of
noise. However, experimental demonstrations of this hierarchy in a sufficient
and necessary way (i.e., by applying measures or universal witnesses of these
quantum correlations) have been mainly based on full quantum state tomography,
corresponding to measuring at least 15 real parameters of two-qubit states.
Here we report an experimental demonstration of this hierarchy by measuring
only six elements of a correlation matrix depending on linear combinations of
two-qubit Stokes parameters. We show that our experimental setup can also
reveal the hierarchy of these quantum correlations of generalized Werner
states, which are any two-qubit pure states affected by white noise.
