Vortex creation, annihilation and nonlinear dynamics in atomic vapors

Abstract

We exploit new techniques for generating vortices and controlling their interactions in an optical beam in a nonlinear atomic vapor. A precise control of the vortex positions allows us to observe strong interactions leading to vortex dynamics involving annihilations. With this improved controlled nonlinear system, we get closer to the pure hydrodynamic regime than in previous experiments while a wavefront sensor offers us a direct access to the fluid's density and velocity. Finally, we developed a relative phase shift method which mimics a time evolution process without changing non-linear parameters. These observations are an important step toward the experimental implementation of 2D turbulent state

arXiv comment6 pages, 6 figures

References in corpus (20)

• Dispersive, superfluid-like shock waves in nonlinear optics
• Emergence of turbulence in an oscillating Bose-Einstein condensate
• Absolute absorption on the rubidium D lines: comparison between theory and experiment
• The laminar-turbulent transition in a fibre laser
• Off-axis digital hologram reconstruction: some practical considerations
• Observation of the Bogoliubov dispersion relation in a fluid of light
• One-Dimensional Optical Wave Turbulence: Experiment and Theory
• Optical wave turbulence and condensation of light
• Annular Vortex Chain in a Resonantly Pumped Polariton Superfluid
• The role of geometry in the superfluid flow of nonlocal photon fluids
• Freely decaying turbulence and Bose-Einstein condensation in Gross-Pitaevski model
• Bose-Einstein condensation and Berezinskii-Kosterlitz-Thouless transition in 2D Nonlinear Schrödinger model
• Interferences between Bogoliubov excitations and their impact on the evidence of superfluidity in a paraxial fluid of light
• Dark solitons generation and their instability dynamics in two dimensional condensates
• Experimental observation of turbulent coherent structures in a superfluid of light
• Signatures of Lévy flights with annealed disorder
• Time-resolved detection of relative intensity squeezed nanosecond pulses in a Rb87 vapor
• Dissipation-enhanced collapse singularity of a nonlocal fluid of light in a hot atomic vapor
• Breaking of Josephson junction oscillations and onset of quantum turbulence in Bose--Einstein condensates
• Spontaneous generation, enhanced propagation and optical imprinting of quantized vortices and dark solitons in a polariton superfluid: towards the control of quantum turbulence

Cited by in corpus (10)

• Hot atomic vapors for nonlinear and quantum optics
• Turbulent dynamics in two-dimensional paraxial fluid of light
• Topological constraints on the dynamics of vortex formation in a two-dimensional quantum fluid
• Spin and Density Modes in a Binary Fluid of Light
• Observation of Jones-Roberts solitons in a paraxial quantum fluid of light
• Paraxial fluids of light
• Cooperative optical pattern formation in an ultrathin atomic layer
• Measurement of nonequilibrium vortex propagation dynamics in a nonlinear medium
• Static and dynamic properties of self-bound droplets of light in hot vapours
• Dynamical phase transition of light in time-varying nonlinear dispersive media