Spontaneous emission of an atom placed near a nanobelt of elliptical cross section

Abstract

Spontaneous emission of an atom (molecule) placed near a nanocylinder of elliptical cross-section of an arbitrary composition is studied. The analytical expressions have been obtained for the radiative and nonradiative channels of spontaneous decay and investigated in details.

Spontaneous decay rate and Casimir–Polder interaction of a two-level atom in a Bragg-reflector cylindrical structure

“…The expression of the atomic spontaneous decay rate in terms of the Green tensor can be found, for example, in [7,8] and the CP potential, in [9], which was derived from the exact centre-ofmass equation of motion approach. A number of later works were devoted to examining these two quantities in various combinations of materials and geometries, some of which are cited here representatively [10][11][12][13][14][15][16][17][18][19][20][21][22]. In [10], for example, Wylie and Sipe employed a linear-response theory to calculate the frequency shift, which can be identified with the CP potential, and lifetime of an excited atom near a planar interface.…”

“…Klimov and Ducloy considered both dipole and quadrupole transitions in an atom placed near an ideally conducting cylinder [13], and dipole transitions in an atom placed near a dielectric cylinder [14]. Guzatov and Klimov later examined the decay rate of an atom near a perfectly conducting elliptic cylinder and an arbitrary material elliptic nanocylinder [15]. Bennett analysed the spontaneous decay rate of an excited atom near a lithographed surface and the CP interaction of a ground-state atom in the same settings [16].…”

“…In this paper, we consider the spontaneous decay and the CP interaction of an excited atom enclosed in a cylindrical distribute-Bragg-reflector (DBR) structure. In terms of structural complexity we go one step further than [13][14][15], where only two layers are allowed. The DBR in our treatment consists of concentric layers, while in [11] it is arranged along the axial direction.…”

Light absorption in the near field around surface plasmon polaritons

“…Significant attention has been paid to the modifications of the spontaneous emission 6,7 as a result of confined light since the pioneering work of Purcell 8 in 1946. The possibilities of suppressing or enhancing the emitted radiation in novel structures such as photonic crystals, 9,10 or more recently plasmonic devices, [11][12][13][14][15] has attracted the interest of many workers.…”

Using chiral nano-meta-particles to control chiral molecule radiation

“…A n Ë O n ì ÐÇÍÑÕÑÓÞÇ ÍÑà××ËÙËÇÐÕÞ, ÍÑÕÑÓÞÇ ÄÞÓÂÉÂáÕÔâ ÚÇÓÇÊ ×ÖÐÍÙËË ¢ÇÔÔÇÎâ Ë ÊÂÄËÔâÕ ÕÑÎßÍÑ ÑÕ ÔÄÑÌÔÕÄ Ô×ÇÓÞ [18]. ¥Îâ ÔÍÑÓÑÔÕË ÓÂÔÒÂAE Ð B-×ÑÕÑÐÞ ËÏÇÇÏ ÂÐÂÎÑÅËÚÐÞÇ ÄÞÓÂÉÇÐËâ [18].…”