What is the significance of nonlocality super-activation in this paper?

[DarMM]

Thought this was an interesting paper that people might not know of:
https://arxiv.org/abs/1205.3118
It constructs a state $\rho$ whose correlations have a local hidden variable model, but those of $\rho \otimes \rho$ do not.

 

[ftr]

Thought this was an interesting paper that people might not know of:
https://arxiv.org/abs/1205.3118
It constructs a state $\rho$ whose correlations have a local hidden variable model, but those of $\rho \otimes \rho$ do not.

What does he mean by super activation, shouldn't he put it in quotes. When I google I get fish tank filter