Vortex gyroscope imaging of planar superfluids
arXiv:1405.4352 · doi:10.1103/PhysRevLett.113.165303
Abstract
We propose a robust imaging technique that makes it possible to distinguish vortices from antivortices in quasi-two-dimensional Bose--Einstein condensates from a single image of the density of the atoms. Tilting the planar condensate prior to standard absorption imaging excites a generalized gyroscopic mode of the condensate revealing the sign and location of each vortex. This technique is anticipated to enable experimental measurement of the incompressible kinetic energy spectrum of the condensate and the observation of a negative temperature phase transition of the vortex gas, driven by two-dimensional superfluid turbulence.
10 pages, 8 figures
References in corpus (10)
- Quantised Vortices in an Exciton-Polariton Fluid
- Emergence of turbulence in an oscillating Bose-Einstein condensate
- Observation of Solitonic Vortices in Bose-Einstein Condensates
- Energy spectra of vortex distributions in two-dimensional quantum turbulence
- Emergence of order from turbulence in an isolated planar superfluid
- Kelvin Waves of Quantized Vortex Lines in Trapped Bose-Einstein Condensates
- Superfluidity of an interacting trapped quasi-2D Bose gas
- Experimental observation of the 'Tilting Mode' of an array of vortices in a dilute Bose-Einstein Condensate
- Vortex waves in trapped Bose-Einstein condensates
- Collective dynamics of vortices in trapped Bose-Einstein condensates