Effect of the atomic dipole relaxation and the pulse width on temporal cloaking

Abstract

We investigated the effect of atomic dipole relaxation on temporal cloaking in a four-level N-type atomic system. Due to dipole relaxation rates, significant variation in the group index and in the advance/delay time of the probe pulse is noted. Temporal gaps of the order of nanoseconds are opened. Furthermore, multiple temporal gaps are created in a comparatively narrow probe pulse, whose quality is modified due to the width of the probe pulse and with the dipole relaxation rates. The results of this article will play a vital role in secure transmission and storage of information.

Surface plasmon polariton at the interface of dielectric and graphene medium using the Doppler broadening effect

“…Light matter interaction is well studied in different systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. In recent years there has been a rapid expansion of research into nanophotonics based on surface plasmon polaritons (SPPs), which are the collective excitations of conduction electrons, usually in a metal that launches from coherent light-matter interaction and having greater momentum than light of the same frequency [20].…”

Surface plasmon polaritons induced reduced hacking

“…[15,16] So for, SPPs have found numerus applications in polarizers, sensors, photodetectors, spectroscopy, microscopy, metasurfaces, compact cameras, integrated imaging, and detection systems. [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] With these remarkable properties, SPPs can present some exciting opportunities for efficient reduced hacking. With this in mind, in this article we present a theoretical approach towards the reduced hacking based on SPPs.…”