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- Title
Atomic Nanostructured Systems with Negative Extinction.
- Authors
Gadomsky, O. N.; Musich, D. O.
- Abstract
This article proves the fundamental possibility of amplifying light by a system of indistinguishable atoms taking into account the delayed dipole-dipole interaction in an external radiation field. It is shown that the amplification of light occurs from an antisymmetric quantum state of the pair of identical atoms, one of which is in an excited state. A formula is obtained for the polarizability of atoms in the ground state, the dispersion dependence of which contains the inflection point separating the wavelength ranges with positive and negative dispersion. In the range with negative dispersion, the extinction cross section of the atomic system is negative, that is, this system amplifies light.
- Subjects
QUANTUM states; EXCITED states; DIPOLE-dipole interactions; ATOMS; ULTRACOLD molecules
- Publication
Russian Physics Journal, 2022, Vol 65, Issue 3, p454
- ISSN
1064-8887
- Publication type
Article
- DOI
10.1007/s11182-022-02655-9