Artificial gauge magnetic and electric fields for free two-level atoms interacting with optical Ferris wheel light fields

Lembessis, V. E.; Alqarni, Abdulaziz S.; Alshamari, S.; Siddig, Abubaker A.; Aldossary, Omar M.

doi:10.1364/josab.34.001122

Cited by 13 publications

(7 citation statements)

References 26 publications

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“…The method demonstrated here is also applicable to other kinds of vortex beams. The knowledge of the detailed structure of the interference pattern can extend the application in manipulation of matter using superimposed vortex beams [17,19,20,21].…”

Section: Discussionmentioning

confidence: 99%

“…For example, the twisted interference fringes were proposed to enhance the gradient force exerted by the Tornado-like pattern upon micro-particles in optical tweezers [17] and measure the curvature radius of a concave mirror or convex lens [18]. The rotating interference pattern has broad applications in manipulation of cold atoms, such as generating artificial gauge electromagnetic field [19], exploring quantum Hall physics [20], rotating single atoms [21], and so on. Previous works have observed the rotation and twist effects of the interference pattern mainly based on the visual inspection [14,15,16,22,23].…”

Section: Introductionmentioning

confidence: 99%

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Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam

Nie,

Kong,

Gao

et al. 2022

Preprint

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We experimentally and theoretically characterize the temporal rotation and radial twist of the interference pattern of vortex beam with its conjugate copy. To quantitatively study the temporal rotation and radial twist, we controllably modify the conjugate beam with a frequency or wavefront curvature difference using a movable Mach-Zehnder interferometer. The effects of the physical parameters (i.e., the topological charge, frequency difference and wavefront curvature difference of the vortex beams) on the temporal rotation as well as radial twist are systematically explored. We further measure two parameters, the rotation velocity Ω and twist coefficient α, respectively, to characterize the degree of the temporal rotation and radial twist of the interference pattern. The theory of the interference model on vortex beams have good agreements with the experimental results. This work is favorite to study the detailed structure of the interference pattern and manipulate matter with superimposed vortex beams.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam

Nie,

Kong,

Gao

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The detailed pattern of phase dislocations, wavefronts and effective fields of velocities of such lattices [42] demonstrated the vortex pairing ( fig.6). The effective magnetic fields B which may be realized with such vortex configurations [53,54] associated with the each phaselocked vortex are counter-directed for adjacent vortices. This happens in contrast to conventional Abrikosov vortex lattices [5] where all vortices produce co-rotating currents around magnetic field lines.…”

Section: Periodic Transverse Structures In Laser Cavities Obtainedmentioning

confidence: 99%

Structured light entities, chaos and nonlocal maps

Okulov

2020

Chaos, Solitons & Fractals

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Spatial chaos as a phenomenon of ultimate complexity requires the efficient numerical algorithms. For this purpose iterative low-dimensional maps have demonstrated high efficiency. Natural generalization of Feigenbaum and Ikeda maps may include convolution integrals with kernel in a form of Green function of a relevant linear physical system. It is shown that such iterative nonlocal nonlinear maps are equivalent to ubiquitous class of nonlinear partial differential equations of Ginzburg-Landau type. With a Green functions relevant to generic optical resonators these nonlocal maps emulate the basic spatiotemporal phenomena as spatial solitons, vortex eigenmodes breathing via relaxation oscillations mediated by noise, vortex-vortex and vortex-antivortex lattices with periodic location of vortex cores. The smooth multimode noise addition facilitates the selection of stable entities and elimination of numerical artifacts.

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“…This has led to the development of different techniques to create vortices as well as currents in BECs. For instance, stirring a BEC with a laser beam [26,30], phase imprinting [32], a rotating trap [34], a rotating laser spoon [26], rotating magnetic trap, rotating thermal cloud [35], phase engineering in two-species condensates [36], inhomogeneous synthetic magnetic fields [37], and, recently, using vector gauge potential [38][39][40]. The defects in BECs result in different vortex lattice structural geometries, e.g., linear vortex lattices [41] and zigzag arrangement of vortices [42].…”

Section: Introductionmentioning

confidence: 99%

Formation of local and global currents in a toroidal Bose-Einstein condensate via an inhomogeneous artificial gauge field

2022

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We study the effects of a position-dependent artificial gauge field on an atomic Bose-Einstein condensate in quasi-one-dimensional and two-dimensional ring settings. The inhomogeneous artificial gauge field can induce global and local currents in the Bose-Einstein condensate via phase gradients along the ring and vortices, respectively. We observe two different regimes in the system depending on the radial size of the ring and the strength of the gauge field. For weak artificial gauge fields, the angular momentum increases, as expected, in a quantized manner; however, for stronger values of the fields, the angular momentum exhibits a linear (nonquantized) behavior. We also characterize the angular momentum for noncylindrically symmetric traps.

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Artificial gauge magnetic and electric fields for free two-level atoms interacting with optical Ferris wheel light fields

Cited by 13 publications

References 26 publications

Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam

Characterizing the temporal rotation and radial twist of the interference pattern of vortex beam

Structured light entities, chaos and nonlocal maps

Formation of local and global currents in a toroidal Bose-Einstein condensate via an inhomogeneous artificial gauge field

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