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Coreless vortex formation in a spinor Bose-Einstein condensate.

A E Leanhardt1, Y Shin, D Kielpinski

  • 1Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Physical Review Letters
|May 7, 2003
PubMed
Summary
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Coreless vortices were created in a spinor Bose-Einstein condensate by manipulating magnetic fields. This process imprinted distinct phase windings, leading to the radial separation of spin components.

Area of Science:

  • Atomic, Molecular, and Optical Physics
  • Condensed Matter Physics

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter formed by cooling bosons to near absolute zero.
  • Spinor BECs possess internal spin degrees of freedom, allowing for complex spin textures and dynamics.
  • Vortices in BECs are quantized topological defects that can carry angular momentum.

Purpose of the Study:

  • To investigate the creation and properties of coreless vortices in a spinor Bose-Einstein condensate.
  • To explore the relationship between phase winding and spin texture in a multi-component BEC.
  • To understand the radial separation of spin components induced by imprinted phase winds.

Main Methods:

  • Utilized a three-component F=1 sodium spinor Bose-Einstein condensate.

Related Experiment Videos

  • Employed a Ioffe-Pritchard magnetic trap to confine the condensate.
  • Adiabatically reduced the magnetic bias field along the trap axis to zero to manipulate the spin texture.

    • Main Results:

    • Successfully imprinted coreless vortices in the spinor BEC.
    • Achieved a distributed condensate population across three spin states, forming a distinct spin texture.
    • Observed different phase windings for each spin state, resulting in their radial separation.

    Conclusions:

    • Coreless vortices can be effectively created and controlled in spinor BECs.
    • The manipulation of magnetic fields provides a pathway to engineer spin textures and topological defects.
    • Radial separation of spin components is a direct consequence of imprinted phase windings in the spinor condensate.