@article {212,
	title = {Multiqubit subradiant states in N-port waveguide devices: $\varepsilon$-and-$μ$-near-zero hubs and nonreciprocal circulators},
	journal = {Physical Review A},
	volume = {97},
	year = {2018},
	pages = {022309},
	doi = {https://doi.org/10.1103/PhysRevA.97.022309},
	url = {https://doi.org/10.1103/PhysRevA.97.022309},
	author = {Liberal, I{\~n}igo and Engheta, Nader}
}
