Dynamics of Two Dark Solitons in a Polariton Condensate  

作　　者：Yiling Zhang Chunyu Jia Zhaoxin Liang 张义灵;贾春玉;梁兆新(Department of Physics,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]Department of Physics,Zhejiang Normal University,Jinhua 321004,China

出　　处：《Chinese Physics Letters》2022年第2期5-9,共5页中国物理快报（英文版）

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(Grant No.LZ21A040001);the National Natural Science Foundation of China(Grant Nos.12074344 and 11975208);the Key Projects of the Natural Science Foundation of China(Grant No.11835011)。

摘　　要：We theoretically investigate dynamics of two dark solitons in a polariton condensate under nonresonant pumping,based on driven dissipative Gross–Pitaevskii equations coupled to the rate equation.The equation of motion of the relative center position of two-dark soliton is obtained analytically by using the Lagrangian approach.In particular,the analytical expression of the effective potential between two dark solitons is given.The resulting equation of motion captures how the open-dissipative character of a polariton Bose–Einstein condensate affects properties of dynamics of two-dark soliton,i.e.,two-dark soliton relax by blending with the background at a finite time.We further simulate the relative motion of two dark solitons numerically with the emphasis on how two-soliton motion is manipulated by the initial velocity,in excellent agreement with the analytical results.The prediction of this work is sufficient for the experimental observations within current facilities.

关 键 词：EQUATION SOLITON SOLITONS 

分 类 号：O469[理学—凝聚态物理]