In this paper we analyze and discuss the solitons propagation in a left-handed four-level atomic system coupled to three laser fields. The system is analyzed through the density matrix formalism. We show that by varying the external probe field amplitude in time, the soliton propagation is obtained in the left-handed medium . Our scheme allows to engineer under certain conditions, the soliton propagation in the four- level atomic system while maintaining the negative refractive index.
Digital Object Identifier (DOI)
"Soliton Propagation in a Left-handed Four-Level Atomic System,"
Applied Mathematics & Information Sciences: Vol. 14
, Article 43.
Available at: https://dc.naturalspublishing.com/amis/vol14/iss4/43