negative delay
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Photonics ◽  
2021 ◽  
pp. 623-655
Author(s):  
El Houssaine El Boudouti ◽  
Bahram Djafari-Rouhani ◽  
Abdellatif Akjouj ◽  
Leonard Dobrzyński

2018 ◽  
Vol 360 ◽  
pp. 25-30 ◽  
Author(s):  
Renata Sisto ◽  
Christopher A. Shera ◽  
Arturo Moleti

2017 ◽  
Vol 122 (18) ◽  
pp. 183106 ◽  
Author(s):  
N. Ouchani ◽  
A. El Moussaouy ◽  
H. Aynaou ◽  
Y. El Hassouani ◽  
E. H. El Boudouti ◽  
...  

2017 ◽  
Vol 31 (29) ◽  
pp. 1750213
Author(s):  
M. Di Mauro ◽  
S. Esposito ◽  
A. Naddeo

We study the unconventional transmission properties of a wave packet through a PT-symmetric potential region as describing the actual electromagnetic wave propagation along a waveguide filled with gain and loss media. The nontrivial behavior of the transmission probability manifests in the giant amplification of the incident electromagnetic signal of given wavelengths for well-defined configurations, depending on the gain/loss contrast. Maximum transmission peaks are related to spectral singularities and a strict correlation exists between the “resonant” wavelengths and the gain/loss contrast. The transit times are as well calculated, showing their surprising vanishing in the opaque barrier limit, independently of the gain/loss contrast, which is reminiscent of some sort of Hartman effect. Also, nonlocal effects manifest in the presence of negative delay times for given configurations, while a correlation is apparent between maximum delay times and transmission probability peaks, though appreciably depending on the gain/loss contrast.


2004 ◽  
Vol 21 (2) ◽  
pp. 425 ◽  
Author(s):  
Eugeniy E. Mikhailov ◽  
Vladimir A. Sautenkov ◽  
Yuri V. Rostovtsev ◽  
George R. Welch

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