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Journal of the Optical Society of America B

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

V. E. Lembessis, A. Alqarni, S. Alshamari, Abubaker A. Siddig, Omar Marzook Al-Dossary

Published May 11, 2017• 12 citations
Publisher

Abstract

We consider the creation of artificial gauge magnetic and electric fields created when a two-level atom interacts with an optical Ferris wheel light field. These fields have the spatial structure of the optical Ferris wheel field intensity profile. It is shown, we believe for first time, that when this optical field pattern is made to rotate, then we have the creation of artificial electromagnetic fields that propagate in curved paths. The properties as well the limitations of these artificial electromagnetic fields are investigated and discussed.

DOI
10.1364/josab.34.001122

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We consider the creation of artificial gauge magnetic and electric fields created when a two-level atom interacts with an optical Ferris wheel light field. These fields have the spatial structure of the optical Ferris wheel field intensity profile. It is shown, we believe for first time, that when this optical field pattern is made to rotate, then we have the creation of artificial electromagnetic fields that propagate in curved paths. The properties as well the limitations of these artificial electromagnetic fields are investigated and discussed.
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We investigate the possibility of strong localization, of the Lamb–Dicke type, for cold atoms trapped by a far off-resonant Ferris wheel optical dipole potential. This optical dipole potential light field is created when a light field generated by the superposition of two similar co-propagating Laguerre–Gaussian beams, with opposite winding numbers, interacts with a two-level atom. We show that strong confinement of atoms in such a light field is possible when the light field is tightly focused, for low values of the winding number and relatively high values of power. We show that a combination of a Ferris wheel with an ordinary axial Gaussian optical lattice provides 3D cylindrically symmetric optical lattices in which the Lamb–Dicke limit can be reached for typically used experimental parameter values.
We propose a scheme for the creation of stable optical Ferris wheel (OFW) solitons in a nonlocal Rydberg electromagnetically induced transparency (EIT) medium. Depending on a careful optimization of both the atomic density and the one-photon detuning, we obtain an appropriate nonlocal potential provided by the strong interatomic interaction in Rydberg states that can perfectly compensate for the diffraction of the probe OFW field. Numerical results show that the fidelity remains larger than 0.96, while the propagation distance has exceeded 160 diffraction lengths. Higher-order OFW solitons with arbitrary winding numbers are also discussed. Our study provides a straightforward route to generate spatial optical solitons in the nonlocal response region of cold Rydberg gases.