Two-dimensional anisotropic vortex quantum droplets in dipolar Bose−Einstein condensates  

作　　者：Guilong Li Xunda Jiang Bin Liu Zhaopin Chen Boris A.Malomed Yongyao Li 

机构地区：[1]School of Physics and Optoelectronic Engineering,Foshan University,Foshan 528225,China [2]Physics Department and Solid-State Institute,Technion,Haifa 32000,Israel [3]Department of Physical Electronics,School of Electrical Engineering,Faculty of Engineering,Tel Aviv University,Tel Aviv 69978,Israel [4]Instituto de Alta Investigación,Universidad de Tarapacá,Casilla 7D,Arica,Chile [5]Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro−Nano Optoelectronic Technology,Foshan University,Foshan 528225,China

出　　处：《Frontiers of physics》2024年第2期205-211,共7页物理学前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC)through Grant Nos.12274077,11874112,12305013,and 11905032;the Natural Science Foundation of Guangdong Province through Grant Nos.2021A1515010214 and 2021A1515111015;the Key Research Projects of General Colleges in Guangdong Province through Grant No.2019KZDXM001;the Research Fund of Guangdong−Hong Kong−Macao Joint Laboratory for Intelligent Micro−Nano Optoelectronic Technology through Grant No.2020B1212030010;The work of B.A.M.was supported,in part,by the Israel Science Foundation through Grant No.1695/22.

摘　　要：Creation of stable intrinsically anisotropic self-bound states with embedded vorticity is a challenging issue.Previously,no such states in Bose−Einstein condensates(BECs)or other physical settings were known.Dipolar BEC suggests a unique possibility to predict stable two dimensional anisotropic vortex quantum droplets(2D-AVQDs).We demonstrate that they can be created with the vortex axis oriented perpendicular to the polarization of dipoles.The stability area and characteristics of the 2D-AVQDs in the parameter space are revealed by means of analytical and numerical methods.Further,the rotation of the polarizing magnetic field is considered,and the largest angular velocities,up to which spinning 2D-AVQDs can follow the rotation in clockwise and anti-clockwise directions,are found.Collisions between moving 2D-AVQDs are studied too,demonstrating formation of bound states with a vortex−antivortex−vortex structure.A stability domain for such stationary bound states is identified.Unstable dipolar states,that can be readily implemented by means of phase imprinting,quickly transform into robust 2D-AVQDs,which suggests a straightforward possibility for the creation of these states in the experiment.

关 键 词：dipolar Bose−Einstein condensate anisotropic vortex quantum droplets 

分 类 号：O41[理学—理论物理]