scholarly journals Group delay controls of the photons transmitting through two cavities coupled by an artificial atomic ensemble: controllable electromagnetically induced transparency-like effects

2021 ◽  
Author(s):  
Suirong He ◽  
Yufen Li ◽  
Lianfu Wei
Keyword(s):  
Group Delay ◽  
Electromagnetically Induced Transparency ◽  
Atomic Ensemble ◽  
Induced Transparency

scholarly journals All-dielectric Metamaterial for Electromagnetically-induced Transparency in Optical Region

2020 ◽  
Vol 30 (2) ◽  
pp. 189
Author(s):  
Pham The Linh ◽  
Nguyen Thi Viet Ninh ◽  
Nguyen Dinh Quang ◽  
Tran Tien Lam ◽  
Nguyen Van Ngoc ◽  
...  
Keyword(s):  
Electromagnetic Waves ◽  
Group Delay ◽  
Electromagnetically Induced Transparency ◽  
Dielectric Materials ◽  
Factor Group ◽  
Ohmic Loss ◽  
Q Factor ◽  
Characteristic Parameters ◽  
Optical Region ◽  
Induced Transparency

Metamaterial (MM) is emerging as a promising approach to manipulate electromagnetic waves, spanning from radio frequency to the optical region. In this paper, we employ an effect called electromagnetically-induced transparency (EIT) in all-dielectric MM structures to create a narrow transparent window in opaque broadband of the optical region (580-670 nm). Using dielectric materials instead of metals can mitigate the large non-radiative ohmic loss on the metal surface. The unit-cell of MM consists of Silicon (Si) bars on Silicon dioxide (SiO\(_{2}\)) substrate, in which two bars are directed horizontally and one bar is directed vertically. By changing the relative position and dimension of the Si bars, the EIT effect could be achieved. The optical properties of the proposed MM are investigated numerically using the finite difference method with commercial software Computer Simulation Technology (CST). Then, characteristic parameters of MM exhibiting EIT effect (EIT-MM), including Q-factor, group delay, are calculated to evaluate the applicability of EIT-MM to sensing and light confinement.

Propagation of squeezed vacuum pulses inside a cold atomic ensemble with electromagnetically induced transparency

2007 ◽  
Author(s):  
Kazuhito Honda ◽  
Daisuke Akamatsu ◽  
Manabu Arikawa ◽  
Yoshihiko Yokoi ◽  
Keiichirou Akiba ◽  
...  
Keyword(s):  
Electromagnetically Induced Transparency ◽  
Atomic Ensemble ◽  
Squeezed Vacuum ◽  
Induced Transparency
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