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Physical Experiment of College

Classical RLC Circuit Simulates the Quantum Electromagnetic Induced Transparent Phenomenon

Yuchen Guo

Published Jan 1, 2014• 0 citations
OpenAlex

Abstract

We simulate the Λ type quantum electromagnetic induced transparent phenomenon using one classical RLC circuit,and discuss the influences of Rabi frequency and detuning capacity on the system's absorptions. Meanwhile,we analyze the differences and mechanism between the simulating experiment and the real electromagnetic induced phenomenon. Therefore,it is helpful for further understanding the quantum phenomenon.

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Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE•Apr 23, 2001•0 citations
We simulate the Λ type quantum electromagnetic induced transparent phenomenon using one classical RLC circuit,and discuss the influences of Rabi frequency and detuning capacity on the system's absorptions. Meanwhile,we analyze the differences and mechanism between the simulating experiment and the real electromagnetic induced phenomenon. Therefore,it is helpful for further understanding the quantum phenomenon.
RLC circuits may used to simulate the phenomenon of Electromagnetically Induced Transparency(EIT) in atomic vapors.The EIT-like effect is observed in capacitor coupled RLC circuits due to the classical destructive interference,which is studied by examining the frequency dependence of the power transferred from the external generator to the resonant first loop.We investigated the effect of coupling strength and frequency detuning on EIT-like effect in two mesh circuits which used to analog three-level atom in the Λ configuration and in three mesh circuits which used to analog four-level atom in the inverted-Y and N configuration.
\n With a metamaterial structure, the phenomenology observed in quantum electromagnetically induced transparency is reproduced. Through the parametric comparison between quantum and classical systems, the physical mechanism of this novel phenomenon has been explained directly in our analysis. In addition, we use another metamaterial structure to mimic a tripod four-level atom and reveal the analog of electromagnetically induced absorption. Our theoretical and experimental studies may not only bring an intuitive understanding of quantum interference in atomic system, but also provide useful guidelines for the design of microwave devices based on metamaterials.\n
The phenomenon of electromagnetically induced transparency, which was discovered recently in atomic systems, is demonstrated for the first in a subband quantum well system. Applying strong coupling field (Rabi frequency is on the same order as the intersubband linewidth), which is two- photon-resonant with the 1 - 3 intersubband transition, produces dramatic change in the 1 - 2 intersubband absorption profile. This effect can be accounted for in terms of 1 - 2 and 2 - 3 dipoles being driven into coherence by a strong coupling field; it is not related to self- induced transparency or spectral hole-burning (the frequency of the coupling field is quite different from that of 1 - 2 resonance) and, similar to Fano-type interference, is a pure result of destructive interference of probability amplitudes.