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Journal Article

Electromagnetically-induced-transparency–like phenomenon with resonant meta-atoms in a cavity


Evers,  Jörg
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Hu, Y., Liu, W., Yong, S., Xi, S., Jun, J., Yaping, Y., et al. (2015). Electromagnetically-induced-transparency–like phenomenon with resonant meta-atoms in a cavity. Physical Review A, 92(5): 053824. doi:10.1103/PhysRevA.92.053824.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-2292-7
We experimentally investigate a cavity in which two resonant meta-atoms are embedded. Its corresponding response spectrum to an incident microwave shows an electromagnetically-induced-transparency–like (EIT-like) phenomenon when the meta-atoms are arranged in the sequence node-antinode but not in the sequence antinode-node. We carry out in situ measurements of the cavity field to bring physical insight into this asymmetric response, and use the transfer matrix method joined with coupled-mode theory to give a quantitative analysis. Finally, we demonstrate the unidirectional EIT-like behavior in a two-port design. Our results may benefit novel nonreciprocal devices in the future by exploring the nonlinearity of the meta-atoms with this asymmetric arrangement.