TY - JOUR
T1 - Engineering bright solitons to enhance the stability of two-component Bose-Einstein condensates
AU - Radha, R.
AU - Vinayagam, P. S.
AU - Sudharsan, J. B.
AU - Liu, Wu Ming
AU - Malomed, Boris A.
N1 - Publisher Copyright:
© 2015 Elsevier B.V.
PY - 2015/12/4
Y1 - 2015/12/4
N2 - We consider a system of coupled Gross-Pitaevskii (GP) equations describing a binary quasi-one-dimensional Bose-Einstein condensate (BEC) with intrinsic time-dependent attractive interactions, placed in a time-dependent expulsive parabolic potential, in a special case when the system is integrable (a deformed Manakov's system). Since the nonlinearity in the integrable system which represents binary attractive interactions exponentially decays with time, solitons are also subject to decay. Nevertheless, it is shown that the robustness of bright solitons can be enhanced in this system, making their respective lifetime longer, by matching the time dependence of the interaction strength (adjusted with the help of the Feshbach-resonance management) to the time modulation of the strength of the parabolic potential. The analytical results, and their stability, are corroborated by numerical simulations. In particular, we demonstrate that the addition of random noise does not impact the stability of the solitons.
AB - We consider a system of coupled Gross-Pitaevskii (GP) equations describing a binary quasi-one-dimensional Bose-Einstein condensate (BEC) with intrinsic time-dependent attractive interactions, placed in a time-dependent expulsive parabolic potential, in a special case when the system is integrable (a deformed Manakov's system). Since the nonlinearity in the integrable system which represents binary attractive interactions exponentially decays with time, solitons are also subject to decay. Nevertheless, it is shown that the robustness of bright solitons can be enhanced in this system, making their respective lifetime longer, by matching the time dependence of the interaction strength (adjusted with the help of the Feshbach-resonance management) to the time modulation of the strength of the parabolic potential. The analytical results, and their stability, are corroborated by numerical simulations. In particular, we demonstrate that the addition of random noise does not impact the stability of the solitons.
KW - Bose-Einstein condensate
KW - Bright soliton
KW - GP equation
KW - Gauge transformation
UR - http://www.scopus.com/inward/record.url?scp=84945490244&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2015.08.033
DO - 10.1016/j.physleta.2015.08.033
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AN - SCOPUS:84945490244
SN - 0375-9601
VL - 379
SP - 2977
EP - 2983
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 45-46
ER -