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We observed a new mechanism for vortex nucleation in Bose-Einstein condensates (BECs) subject to synthetic magnetic fields. We made use of a strong synthetic magnetic field initially localized between a pair of merging BECs to rapidly…

量子气体 · 物理学 2023-07-20 R. M. Price , D. Trypogeorgos , D. L. Campbell , A. Putra , A. Valdés-Curiel , I. B. Spielman

We numerically simulate vortex nucleation in a Bose-Einstein Condensate (BEC) subject to an effective magnetic field. The effective magnetic field is generated from the interplay between light with a non-trivial phase structure and the BEC,…

其他凝聚态物理 · 物理学 2007-09-07 D. R. Murray , P Öhberg , Damiá Gomila , Stephen M. Barnett

The physics of quantized vortex excitations in atomic Bose-Einstein condensates has been extensively studied in recent years.Although simple vortex lines are relatively easy to create, control, and measure in experiments, it is a lot more…

量子物理 · 物理学 2020-10-28 James Schloss , Peter Barnett , Rashi Sachdeva , Thomas Busch

We consider a Bose-Einstein condensate subject to a rotating harmonic potential, in connection with recent experiments leading to the formation of vortices. We use the classical hydrodynamic approximation to the non-linear Schr\"odinger…

软凝聚态物质 · 物理学 2016-08-31 Subhasis Sinha , Yvan Castin

The formation of vortices by topological phase engineering has been realized experimentally to create the first two- and four-quantum vortices in dilute atomic Bose-Einstein condensates [A. E. Leanhardt et al., Phys. Rev. Lett. 89, 190403…

介观与纳米尺度物理 · 物理学 2009-11-13 Mikko Mottonen , Ville Pietila , Sami M. M. Virtanen

We investigate the expansion dynamics of spin-orbit-coupled Bose-Einstein condensates subjected to a synthetic magnetic field, after their release from an external harmonic trap. Our findings reveal that the condensate experiences a…

量子气体 · 物理学 2024-02-28 Juan Wang , Hongguang Liang , Yan Li , Chuan-Hsun Li , Chunlei Qu

We study the generation of vortices in rotating Bose--Einstein condensates, a situation which has been realized in a recent experiment (K. W. Madison, F. Chevy, W. Wohlleben, J. Dalibard, Phys. Rev. Lett. {\bf 84} 806 (2000)). By combining…

凝聚态物理 · 物理学 2007-05-23 Juan J. Garcia-Ripoll , Victor M. Perez-Garcia

We systematically investigate the ground state and dynamics of spinor Bose-Einstein condensates subject to a position-dependent detuning. This detuning induces three related quantities-a synthetic magnetic field, an angular velocity, and an…

量子气体 · 物理学 2025-06-12 Fengtao Pang , Huaxin He , Yongping Zhang , Chunlei Qu

The dynamics of interacting quantum vortices in a quasi-two-dimensional spatially inhomogeneous Bose-Einstein condensate, whose equilibrium density vanishes at two points of the plane with a possible presence of an immobile vortex with a…

量子气体 · 物理学 2017-06-01 V. P. Ruban

We introduce equations of motion for spin dynamics in a ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interaction, written using a vector expressing the superfluid velocity and a complex scalar describing the…

量子气体 · 物理学 2011-06-01 Kazue Kudo , Yuki Kawaguchi

Neutral atomic Bose condensates and degenerate Fermi gases have been used to realize important many-body phenomena in their most simple and essential forms, without many of the complexities usually associated with material systems. However,…

量子气体 · 物理学 2015-05-19 Yu-Ju Lin , Rob L. Compton , Karina J. Garcia , James V. Porto , Ian B. Spielman

In this review, we give an overview of the experimental and theoretical advances in the physics of quantized vortices in dilute atomic-gas Bose--Einstein condensates in a trapping potential, especially focusing on experimental research…

其他凝聚态物理 · 物理学 2009-07-10 Kenichi Kasamatsu , Makoto Tsubota

Using a focused laser beam we stir a $^{87}$Rb Bose-Einstein condensate confined in a magnetic trap. We observe that the steady states of the condensate correspond to an elliptic cloud, stationary in the rotating frame. These steady states…

统计力学 · 物理学 2009-11-07 K. W. Madison , F. Chevy , V. Bretin , J. Dalibard

Magnetic monopoles are crucial in explaining the quantization of electric charges and quantum Hall effects, while artificially creating a minimal magnetic monopole in experiments remains a challenge. Here, we come up with a flexible way to…

量子气体 · 物理学 2025-04-01 Xi-Yu Chen , Lijia Jiang , Wen-Kai Bai , Tao Yang , Jun-Hui Zheng

Quantized vortices are the prototypical feature of superfluidity. Pervasive in all natural systems, vortices are yet to be observed in dipolar quantum gases. Here, we exploit the anisotropic nature of the dipole-dipole interaction of a…

The experimental realization of quantum-degenerate Bose gases made of atoms with sizeable magnetic dipole moments has created a new type of fluid, known as a quantum ferrofluid, which combines the extraordinary properties of superfluidity…

量子气体 · 物理学 2017-03-08 A. M. Martin , N. G. Marchant , D. H. J. O'Dell , N. G. Parker

For a spin-carrying particle moving in a spatially varying magnetic field, effective electromagnetic forces can arise due to the geometric phase associated with adiabatic spin rotation of the particle. We report the observation of a…

量子气体 · 物理学 2015-06-17 Jae-yoon Choi , Seji Kang , Sang Won Seo , Woo Jin Kwon , Yong-il Shin

Rotating properties of Bose-Einstein condensates in synthetic magnetic field are studied by numerically solving the Gross-Pitaevskii equation and compared with condensates confined in the rotating trap. It seems that it is more difficult to…

量子气体 · 物理学 2022-03-23 Qiang Zhao , Qiang Gu

In this article, we describe an experimental system for generating Bose-Einstein condensates and controlling the shape and motion of the condensate by using miniaturised magnetic potentials. In particular, we describe the magnetic trap…

软凝聚态物质 · 物理学 2009-11-07 J. Fortagh , H. Ott , S. Kraft , A. Guenther , C. Zimmermann

In this article, we review the research on the dynamics of quantized vortices in superfluid helium and rotating Bose-Einstein condensates. First, after briefly reviewing the earlier research and describing the current problems on quantized…

凝聚态物理 · 物理学 2007-05-23 Makoto Tsubota , Kenichi Kasamatsu , Tsunehiko Araki
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