Volume 97, Number 2, January 2012
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||17 January 2012|
Manipulating classical waves with an analogue of quantum interference in a V-type atom
Key Laboratory of Advanced Micro-Structure Materials, Ministry of Education - Shanghai 200092, PRC
2 Department of Physics, Tongji University - Shanghai 200092, PRC
3 Institute of Acoustics, Tongji University - Shanghai 200092, PRC
4 Beijing Computational Science Research Center - Beijing 100084, PRC
Accepted: 8 December 2011
We demonstrate a waveguide system containing two side-coupled resonators to explore the interference effects between two low-Q resonators. The structure closely mimics the quantum interference between two direct excitation pathways in a three-level V-type atom. We show that high-Q transparency peak can be achieved by using two low-Q resonators, and the transmission lineshape can be tuned between an EIT-like resonant peak and a Lorentzian-like resonant dip. Acoustic experiments, in good agreement with the theoretical predictions, are performed to confirm this idea.
PACS: 41.20.Jb – Electromagnetic wave propagation; radiowave propagation / 42.60.Da – Resonators, cavities, amplifiers, arrays, and rings / 43.35.+d – Ultrasonics, quantum acoustics, and physical effects of sound
© EPLA, 2012
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