I was wondering if graphene plasmonic waveguides could be synergic with some perhaps tunable non-reciprocal photonic devices?

For instance, coupled graphene SPPs with some non-reciprocal phase shift and interference / mode conversion scheme like Aharonov–Bohm effect?

Or could graphene or other 2D materials might possibly utilized in some somewhat tunable non-Hermitian photonics regarding perhaps PT-symmetric/ -broken schemes?

Thanks.