Stable and mobile excited two-dimensional dipolar Bose-Einstein condensate solitons
arXiv:1409.5145 · doi:10.1088/0953-4075/47/22/225304
Abstract
We demonstrate robust, stable, mobile excited states of quasi-two-dimensional (quasi-2D) dipolar Bose-Einstein condensate (BEC) solitons for repulsive contact interaction with a harmonic trap along the direction perpendicular to the polarization direction . Such a soliton can freely move in the y-z plane. A rich variety of such excitations is considered: one quanta of excitation for movement along (i) y axis or (ii) z axis or (ii) both. A proposal for creating these excited solitonic states in a laboratory by phase imprinting is also discussed. We also consider excited states of quasi-2D dipolar BEC soliton where the sign of the dipolar interaction is reversed by a rotating orienting field. In this sign-changed case the soliton moves freely in the x-y plane under the action of a harmonic trap in the direction. At medium velocity the head-on collision of two such solitons is found to be quasi elastic with practically no deformation. The findings are illustrated using numerical simulation in three and two spatial dimensions employing realistic interaction parameters for a dipolar Dy BEC.
References in corpus (17)
- Bose-Einstein Condensation of Erbium
- Formation of bright matter-wave solitons during the collapse of Bose-Einstein condensates
- Strong dipolar effects in a quantum ferrofluid
- Observation of dipole-dipole interaction in a degenerate quantum gas
- Stabilizing a purely dipolar quantum gas against collapse
- Radial and angular rotons in trapped dipolar gases
- Anisotropic solitons in dipolar Bose-Einstein Condensates
- C programs for solving the time-dependent Gross-Pitaevskii equation in a fully anisotropic trap
- Bogoliubov modes of a dipolar condensate in a cylindrical trap
- Comparing contact and dipolar interaction in a Bose-Einstein condensate
- Dysprosium magneto-optical traps
- Vortex solitons in dipolar Bose-Einstein Condensates
- Collisions of anisotropic two-dimensional bright solitons in dipolar Bose-Einstein condensates
- Cold atoms in double-well optical lattices
- Stable, mobile, dark-in-bright, dipolar Bose-Einstein condensate soliton
- Variational calculations for anisotropic solitons in dipolar Bose-Einstein condensates
- Dipolar Bose-Einstein condensate soliton on a two-dimensional optical lattice