Realization of a stroboscopic optical lattice for cold atoms with subwavelength spacing.
Phys Rev A (Coll Park)
; 101(4)2020.
Article
em En
| MEDLINE
| ID: mdl-35528197
ABSTRACT
Optical lattices are typically created via the ac Stark shift and are limited by diffraction to periodicities ⩾ λ/2, where λ is the wavelength of light used to create them. Lattices with smaller periodicities may be useful for many-body physics with cold atoms and can be generated by stroboscopic application of a phase-shifted lattice with subwavelength features. Here we demonstrate a λ/4-spaced lattice by stroboscopically applying optical Kronig-Penney-like potentials which are generated using spatially dependent dark states. We directly probe the periodicity of the λ/4-spaced lattice by measuring the average probability density of the atoms loaded into the ground band of the lattice. We measure lifetimes of atoms in this lattice and discuss the mechanisms that limit the applicability of this stroboscopic approach.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Phys Rev A (Coll Park)
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Estados Unidos