Ground-state vortex structures of a rotating binary dipolar Bose–Einstein condensate confined in harmonic plus quartic potential
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摘要
We consider a binary dipolar Bose–Einstein condensate confined in a rotating harmonic plus quartic potential trap.The ground-state vortex structures are numerically obtained as a function of the contact interactions and the dipole–dipole interaction in both slow and rapid rotation cases. The results show that the vortex configurations depend strongly on the strength of the contact interactions, the relative strength between dipolar and contact interactions, as well as on the orientation of the dipoles. A variety of exotic ground-state vortex structures, such as pentagonal and hexagon vortex lattice,square vortex lattice with a central vortex, annular vortex lines, and straight vortex lines, are observed by turning such controllable parameters. Our results deepen the understanding of effects of dipole–dipole interaction on the topological defects.
We consider a binary dipolar Bose–Einstein condensate confined in a rotating harmonic plus quartic potential trap.The ground-state vortex structures are numerically obtained as a function of the contact interactions and the dipole–dipole interaction in both slow and rapid rotation cases. The results show that the vortex configurations depend strongly on the strength of the contact interactions, the relative strength between dipolar and contact interactions, as well as on the orientation of the dipoles. A variety of exotic ground-state vortex structures, such as pentagonal and hexagon vortex lattice,square vortex lattice with a central vortex, annular vortex lines, and straight vortex lines, are observed by turning such controllable parameters. Our results deepen the understanding of effects of dipole–dipole interaction on the topological defects.
We consider a binary dipolar Bose–Einstein condensate confined in a rotating harmonic plus quartic potential trap.The ground-state vortex structures are numerically obtained as a function of the contact interactions and the dipole–dipole interaction in both slow and rapid rotation cases. The results show that the vortex configurations depend strongly on the strength of the contact interactions, the relative strength between dipolar and contact interactions, as well as on the orientation of the dipoles. A variety of exotic ground-state vortex structures, such as pentagonal and hexagon vortex lattice,square vortex lattice with a central vortex, annular vortex lines, and straight vortex lines, are observed by turning such controllable parameters. Our results deepen the understanding of effects of dipole–dipole interaction on the topological defects.
引文
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[11]Zhang H F,Chen F,Yu C C,Sun L H and Xu D H 2017 Chin.Phys.B26 080304
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[15]Lahaye T,Menotti C,Santos L,Lewenstein M L and Pfau T 2009 Rep.Prog.Phys.72 126401
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[17]Zhang X F,Han W,Jiang H F,Saito H and Zhang S G 2016 Ann.Phys.375 368
[18]Goral K,Rza?˙zewski K and Pfau T 2000 Phys.Rev.A 61 051601
[19]Dong B,Sun Q,Liu W M,Ji A C,Zhang X F and Zhang S G 2017Phys.Rev.A 96 013619
[20]Goral K,Santos L and Lewenstein M 2002 Phys.Rev.Lett.88 170406
[21]Vengalattore M,Leslie S R,Guzman J and Stamper-Kurn D M 2008Phys.Rev.Lett.100 170403
[22]Chotia A,Neyehuis B,Steven A M,Yan B,Covey J P,Foss-Feig M,Rey A M,Jin D S and Ye J 2012 Phys.Rev.Lett.108 080405
[23]Wang L X,Dong B,Chen G P,Han W,Zhang S G,Shi Y R and Zhang X F 2016 Phys.Lett.A 380 435
[24]Abad M,Guilleumas M,Mayol R,Pi M and Jezek D M 2010 Phys.Rev.A 81 043619
[25]Zhang X F,Zhang P,Chen G P,Dong B,Tan R B and Zhang S G 2015Acta Phys.Sin.64 060302(in Chinese)
[26]Zhang X F,Han W,Wen L,Zhang P,Dong R F,Chang H and Zhang SG 2015 Sci.Rep.5 08684
[27]Cozzini M,Jackson B and Stringari S 2006 Phys.Rev.A 73 013603
[28]Hsueh C H,Horng T L,Gou S C and Wu W C 2011 Phys.Rev.A 84023610
[29]Liu Y and Zhang S Y 2016 Chin.Phys.B 25 090304
[30]Wang H,Wen L H,Yang H,Shi C X and Li J H 2017 J.Phys.B:At.Mol.Opt.Phys.50 155301
[31]Zhang X F,Wen L,Dai C Q,Dong R F,Jiang H F,Chang H and Zhang S G 2016 Sci.Rep.6 19380
[32]Zhang Y P,Mao L and Zhang C W 2012 Phys.Rev.Lett.108 035302
[33]Bao,W Z,Cai Y Y and Wang H Q 2010 J.Comput.Phys.229 7874
[2]Abo-Shaeer J R,Raman C,Vogels J M and Ketterle W 2001 Science292 476
[3]Khawaja U A and Stoof H 2001 Nature 411 918
[4]Muhlbauer S,Binz B,Jonietz F,Pfleiderer C and Rosch A 2009 Science323 915
[5]Mizushima T,Machida K and Kita T 2002 Phys.Rev.Lett.89 030401
[6]Kasamatsu K,Tsubota M and Ueda M 2004 Phys.Rev.Lett.93 250406
[7]Bulgakov E N and Sadreev A F 2003 Phys.Rev.Lett.90 200401
[8]Li Y E and Xue J K 2016 Chin.Phys.Lett.33 100502
[9]Liu X W and Zhang K Y 2017 Acta Phys.Sin.66 160301(in Chinese)
[10]Xu T F,Zhang Y F,Xu L C and Li Z D 2017 Chin.Phys.B 26 100304
[11]Zhang H F,Chen F,Yu C C,Sun L H and Xu D H 2017 Chin.Phys.B26 080304
[12]Griesmaier A,Werner J,Hensler S,Stuhler J and Pfau T 2005 Phys.Rev.Lett.94 160401
[13]Stuhler J,Koch A T,Fattori M,Pfau T,Giovanazzi S,Pedri P and Santos L 2005 Phys.Rev.Lett.95 150406
[14]Lahaye T,Koch T,Frohlich B,Fattori M,Metz J,Griesmaier A,Giovanazzi S and Pfau T 2007 Nature 448 672
[15]Lahaye T,Menotti C,Santos L,Lewenstein M L and Pfau T 2009 Rep.Prog.Phys.72 126401
[16]Kawaguchi Y,Saito H and Ueda M 2006 Phys.Rev.Lett.96 080405
[17]Zhang X F,Han W,Jiang H F,Saito H and Zhang S G 2016 Ann.Phys.375 368
[18]Goral K,Rza?˙zewski K and Pfau T 2000 Phys.Rev.A 61 051601
[19]Dong B,Sun Q,Liu W M,Ji A C,Zhang X F and Zhang S G 2017Phys.Rev.A 96 013619
[20]Goral K,Santos L and Lewenstein M 2002 Phys.Rev.Lett.88 170406
[21]Vengalattore M,Leslie S R,Guzman J and Stamper-Kurn D M 2008Phys.Rev.Lett.100 170403
[22]Chotia A,Neyehuis B,Steven A M,Yan B,Covey J P,Foss-Feig M,Rey A M,Jin D S and Ye J 2012 Phys.Rev.Lett.108 080405
[23]Wang L X,Dong B,Chen G P,Han W,Zhang S G,Shi Y R and Zhang X F 2016 Phys.Lett.A 380 435
[24]Abad M,Guilleumas M,Mayol R,Pi M and Jezek D M 2010 Phys.Rev.A 81 043619
[25]Zhang X F,Zhang P,Chen G P,Dong B,Tan R B and Zhang S G 2015Acta Phys.Sin.64 060302(in Chinese)
[26]Zhang X F,Han W,Wen L,Zhang P,Dong R F,Chang H and Zhang SG 2015 Sci.Rep.5 08684
[27]Cozzini M,Jackson B and Stringari S 2006 Phys.Rev.A 73 013603
[28]Hsueh C H,Horng T L,Gou S C and Wu W C 2011 Phys.Rev.A 84023610
[29]Liu Y and Zhang S Y 2016 Chin.Phys.B 25 090304
[30]Wang H,Wen L H,Yang H,Shi C X and Li J H 2017 J.Phys.B:At.Mol.Opt.Phys.50 155301
[31]Zhang X F,Wen L,Dai C Q,Dong R F,Jiang H F,Chang H and Zhang S G 2016 Sci.Rep.6 19380
[32]Zhang Y P,Mao L and Zhang C W 2012 Phys.Rev.Lett.108 035302
[33]Bao,W Z,Cai Y Y and Wang H Q 2010 J.Comput.Phys.229 7874