Demonstration of double EIT using coupled harmonic oscillators and RLC circuits

Abstract

Single and double electromagnetically induced transparency (EIT) in a medium, consisting of four-level atoms in the inverted-Y configuration, are discussed using mechanical and electrical analogies. A three coupled spring-mass system subject to damping and driven by an external force is used to represent the four-level atom mechanically. The equations of motion of this system are solved analytically, which revealed single and double EIT. On the other hand, three coupled RLC circuits are used, as the electrical analog, to explore and experimentally demonstrate single and double EIT. The simplicity of these two models makes this experiment appropriate for undergraduate students and easy to incorporate into a college physics laboratory.

arXiv commentREVTeX, 10 pages, 10 figures. Some text revision, added references

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• Description of ultrastrong light-matter interaction through coupled harmonic oscillator models and their connection with cavity-QED Hamiltonians
• Two-oscillator model of trapped-modes interaction in a nonlinear bilayer fish-scale metamaterial
• Study of geometric phase using classical coupled oscillators
• Controlled processing of signal stored in metamaterial with tripod structure
• Analogue of double-$\Lambda$-type atomic medium and vector dromions in a plasmonic metamaterial