According with Aravind:
- the Hopf link, L2a1, corresponds to the Bell state $\frac{1}{\sqrt 2}\big (|00\rangle+|11\rangle\big )$,
- the Borromean link (L6a4) can be considered as GHZ state $\frac{1}{\sqrt 2}\big(|000\rangle+|111\rangle\big )$, and
- the link L6n1 can be associated with a W state $W=\frac{1}{\sqrt 3}\big(|001\rangle+|010\rangle+100\rangle\big )$.
But, according Melnikov et. al, we have a different picture: the Borromean link L6a4 is associated with the W state while L6n1 is associated with the GHZ state.
The Hopf Link, or the Bell state:
L6a4, or the GHZ state in Aravind and the W state in Melnikov et al.:
L6n1, or the W state in Aravind and the GHZ state in Melnikov et al.:
I am confused with such different assignments. Could someone clarify the issue?