@article {4443,
	title = {Low-loss, high-fidelity frequency beam splitter with tunable split ratio based on electromagnetical-ly induced transparency},
	journal = {Phys. Rev. Research},
	volume = {3, 013096 (2021)},
	year = {2021},
	author = {K.-F. Chang and T.-P. Wang and C.-Y. Chen and Y-H Chen and Y.-S. Wang and Y.-F. Chen and Y.-C. Chen and Ite A. Yu}
}
