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Chirality-enabled optical dipole potential energy for two-level atoms

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arxiv 2012.09465 v1 pith:F3F5QVZF submitted 2020-12-17 physics.optics physics.atom-ph

Chirality-enabled optical dipole potential energy for two-level atoms

classification physics.optics physics.atom-ph
keywords dipoleopticalpotentialbeamenergytwo-levelatomchiral
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We consider the optical dipole potential energy, which arises from the interaction of a two-level atom with a circularly polarized Laguerre-Gaussian laser beam of small waist. The beam is characterized by the existence of a longitudinal electric field component which is responsible for the appearance of a chiral term in the optical dipole potential energy. This term reverses sign if either the winding number or the wave polarization of the beam reverses sign. We propose a scheme of a bi-chromatic vortex interaction with the two-level atom in which the resulting optical dipole potential is fully chiral.

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