Ultraslow kuznetsov-ma solitons and ahkmediev breathers in a cold three-state medium exposed to nanosecond optical pulses

Year: 2021

Authors: WANG W.; BU L.; CHENG D.; YE Y.; CHEN S.; BARONIO F.

Autors Affiliation: School of Physics and Quantum Information Research Center, Southeast University, Nanjing, 211189, China; INO CNR and Dipartimento di Ingegneria dell?Informazione, Universita di Brescia, Via Branze 38, Brescia, 25123, Italy

Abstract: We investigate the formation of the Kuznetsov-Ma solitons and Ahkmediev breathers in a cold ?-type three-level atomic system that interacts with a probe field of nanosecond pulse duration and a strong continuous-wave driving field via an electromagnetically induced transparency process. Within the framework of the Hirota equation, exact explicit analytical solutions of these breathers are obtained, showing different amplitude and oscillatory characteristics. Numerical simulations confirm the stability of both types of breathers against non-integrable perturbations that are caused by the nonvanishing decay rates of atomic states. We show that both breathers thus generated can propagate at a quite low group velocity.

Journal/Review: OSA CONTINUUM

Volume: 4 (5)      Pages from: 1488  to: 1496

KeyWords: ROGUE WAVES; INDUCED TRANSPARENCY
DOI: 10.1364/OSAC.422914

Citations: 8
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