This article is cited in 2 papers

OPTICS AND NUCLEAR PHYSICS

Effect of motion of atoms on the character of subradiance of cold dilute ensembles excited by resonant pulsed radiation

I. M. Sokolov<sup>ab

a</sup> Peter the Great St. Petersburg Polytechnic University, St. Petersburg, 195251 Russia
^b Institute of Analytical Instrumentation, Russian Academy of Sciences, St. Petersburg, 190103 Russia

Abstract: The dynamics of the fluorescence of dilute atomic ensembles excited by resonant pulsed radiation has been analyzed. It has been found that the motion of atoms in ensembles cooled to sub-Doppler temperatures in certain time intervals noticeably enhances subradiance rather than suppressing it. It has also been shown that the time dependence of the spontaneous decay rate can be nonmonotonic. The revealed features occur because the character of the slow decay of the atomic excitation is determined after a certain time mainly by the dynamics of subradiant two-atom quantum states, which are due to the resonant dipole–dipole interaction between atoms.

Received: 06.03.2023
Revised: 09.03.2023
Accepted: 10.03.2023

DOI: 10.31857/S1234567823070066

 English version: Journal of Experimental and Theoretical Physics Letters, 2023, 117:7, 517–521