Rotating and spiraling spatial dissipative solitons of light and cold atoms

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Clouds of cold neutral atoms driven by a coherent light beam in a ring cavity exhibit self-structured states transversely with respect to the beam axis due to optomechanical forces and the backaction of the atomic structures on the beam. Below the instability threshold for extended hexagonal structures, localized solitonlike excitations can be stable. These constitute peaks or holes of atom density, depending on the linear susceptibility of the cloud. Complex rotating and spiraling motion of coupled atom-light solitons, and, hence, atomic transport, can be achieved via phase gradients in the input field profile. We also discuss the stability of rotating soliton chains in view of soliton-soliton interactions. The investigations are performed in a cavity scheme but expected to apply to other longitudinally pumped schemes with diffractive coupling.
Original languageEnglish
Article number023318
Number of pages8
JournalPhysical Review A
Publication statusPublished - 18 Feb 2022


  • rotating
  • spiraling
  • spatial dissipative solitons
  • light and cold atoms


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