Description
Title: Using a Laguerre-Gaussian laser pulse, the dynamics of the formation of a rotating Bose-Einstein condensate by the two-photon Raman transition
Abstract: We use two-photon Raman transitions with Gaussian (G) and Laguerre-Gaussian (LG) laser pulses to create Bose-Einstein condensates (BECs), and we present numerical simulations to understand the dynamics involved in the formation of a vortex in a BEC from a nonrotating BEC. We focus on the BEC of Rb atoms in a quasi-two-dimensional harmonic trap while they are constrained in their hyperfine ground states. The harmonic trap is altered by optical dipole potentials produced by G and LG laser pulses in such a way that the density patterns of the condensates change depending on the direction of the generated vortex during the Raman transition process. We look into how the intercomponent interaction and dimensionless peak Rabi frequency of the Raman coupling parameter affect the dynamics of the population transfer process as well as the final population of the rotating condensate. The two BECs tend to overlap more during the Raman transition process, which results in a stronger intercomponent interaction strength.
Keywords: Bose–Einstein condensate; Laguerre–Gaussian; Raman transition; cold atoms; light–matter interaction; particle transfer; density pattern
Paper Quality: SCOPUS / Web of Science Level Research Paper
Subject: Physics
Subject Category: Atomic and Molecular Physics, and Optics
Writer Experience: 20+ Years
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