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Cascade of Solitonic Excitations in a Superfluid Fermi Gas: From Solitons and Vortex Rings to Solitonic Vortices

Mark Ku, Biswaroop Mukherjee, Tarik Yefsah +1 more

Bulletin of the American Physical SocietyJun 9, 20150 citations

Vortices, Solitons and Vortex Rings in a Bose-Einstein Condensate

P. C. Haljan

APSMay 1, 20010 citations

Vortices and solitons in ultracold fermionic gases

Tomasz Karpiuk, Mirosław Brewczyk, Kazimierz Rza̧żewski

Mar 27, 20010 citations

Cascade of Solitonic Excitations in a Superuid Fermi Gas: From Solitons and Vortex Rings to Solitonic Vortices MARK KU, BISWAROOP

Tarik Yefsah, Martin W. Zwierlein

6 Li atoms following a one-sided phase imprint. Via tomographic imaging, we observe the formation of a planar dark soliton, and its subsequent snaking and decay into a vortex ring. The latter eventually breaks at the boundary of the superuid, nally leaving behind a single, remnant solitonic vortex. The nodal surface is directly imaged and reveals its decay into a vortex ring via a puncture of the initial soliton plane. At intermediate stages we nd evidence for more exotic structures resembling -solitons. The observed evolution of the nodal surface represents dynamics that occurs at the length scale of the interparticle spacing, thus providing new experimental input for microscopic theories of strongly correlated fermions.6 Li atoms following a one-sided phase imprint. Via tomographic imaging, we observe the formation of a planar dark soliton, and its subsequent snaking and decay into a vortex ring. The latter eventually breaks at the boundary of the superuid, nally leaving behind a single, remnant solitonic vortex. The nodal surface is directly imaged and reveals its decay into a vortex ring via a puncture of the initial soliton plane. At intermediate stages we nd evidence for more exotic structures resembling -solitons. The observed evolution of the nodal surface represents dynamics that occurs at the length scale of the interparticle spacing, thus providing new experimental input for microscopic theories of strongly correlated fermions.

Jan 1, 20150 citations

Solitons and vortices in ultracold fermionic gases

Tomasz Karpiuk, Mirosław Brewczyk, Kazimierz Rza̧żewski

We investigate the possibilities for the generation of solitons and vortices in a degenerate gas of neutral fermionic atoms. In analogy with the already experimentally demonstrated technique applied to a gaseous Bose-Einstein condensate we propose the phase engineering of a Fermi gas as a practical route to excited states with solitons and vortices. We stress that solitons and vortices appear even in a non-interacting fermionic gas. For solitons, in a system with a sufficiently large number of fermions and appropriate trap configuration, the Pauli blocking acts as the interaction between particles.We investigate the possibilities for the generation of solitons and vortices in a degenerate gas of neutral fermionic atoms. In analogy with the already experimentally demonstrated technique applied to a gaseous Bose-Einstein condensate we propose the phase engineering of a Fermi gas as a practical route to excited states with solitons and vortices. We stress that solitons and vortices appear even in a non-interacting fermionic gas. For solitons, in a system with a sufficiently large number of fermions and appropriate trap configuration, the Pauli blocking acts as the interaction between particles.

arXiv:cond-mat/0103564Journal of Physics B Atomic Molecular and Optical PhysicsJul 3, 200218 citations

Solitonic Vortex in a Strongly-Interacting Fermi Gas

Mark Ku, Wenjie Ji, Biswaroop Mukherjee +4 more

Bulletin of the American Physical SocietyJun 4, 20140 citations

Numerical generation of solitons, vortex rings, and vortices in an ultracold Fermi gas

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