Optical lattice with spin-dependent sub-wavelength barriers

We analyze a tripod atom light coupling scheme characterized by two dark states playing the role of quasi-spin states. It is demonstrated that by properly configuring the coupling laser fields, one can create a lattice with spin-dependent sub-wavelength barriers. This allows to flexibly alter the...

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Autor principal:	Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas Juzeliūnas
Formato:	article
Lenguaje:	EN
Publicado:	SciPost 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/dac5f1f03ba248758026498fd06c1164
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id	oai:doaj.org-article:dac5f1f03ba248758026498fd06c1164
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spelling	oai:doaj.org-article:dac5f1f03ba248758026498fd06c11642021-12-02T18:32:27ZOptical lattice with spin-dependent sub-wavelength barriers2542-465310.21468/SciPostPhys.11.6.100https://doaj.org/article/dac5f1f03ba248758026498fd06c11642021-12-01T00:00:00Zhttps://scipost.org/SciPostPhys.11.6.100https://doaj.org/toc/2542-4653We analyze a tripod atom light coupling scheme characterized by two dark states playing the role of quasi-spin states. It is demonstrated that by properly configuring the coupling laser fields, one can create a lattice with spin-dependent sub-wavelength barriers. This allows to flexibly alter the atomic motion ranging from atomic dynamics in the effective brick-wall type lattice to free motion of atoms in one dark state and a tight binding lattice with a twice smaller periodicity for atoms in the other dark state. Between the two regimes, the spectrum undergoes significant changes controlled by the laser fields. The tripod lattice can be produced using current experimental techniques. The use of the tripod scheme to create a lattice of degenerate dark states opens new possibilities for spin ordering and symmetry breaking.Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas JuzeliūnasSciPostarticlePhysicsQC1-999ENSciPost Physics, Vol 11, Iss 6, p 100 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas Juzeliūnas Optical lattice with spin-dependent sub-wavelength barriers
description	We analyze a tripod atom light coupling scheme characterized by two dark states playing the role of quasi-spin states. It is demonstrated that by properly configuring the coupling laser fields, one can create a lattice with spin-dependent sub-wavelength barriers. This allows to flexibly alter the atomic motion ranging from atomic dynamics in the effective brick-wall type lattice to free motion of atoms in one dark state and a tight binding lattice with a twice smaller periodicity for atoms in the other dark state. Between the two regimes, the spectrum undergoes significant changes controlled by the laser fields. The tripod lattice can be produced using current experimental techniques. The use of the tripod scheme to create a lattice of degenerate dark states opens new possibilities for spin ordering and symmetry breaking.
format	article
author	Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas Juzeliūnas
author_facet	Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas Juzeliūnas
author_sort	Edvinas Gvozdiovas, Povilas Račkauskas, Gediminas Juzeliūnas
title	Optical lattice with spin-dependent sub-wavelength barriers
title_short	Optical lattice with spin-dependent sub-wavelength barriers
title_full	Optical lattice with spin-dependent sub-wavelength barriers
title_fullStr	Optical lattice with spin-dependent sub-wavelength barriers
title_full_unstemmed	Optical lattice with spin-dependent sub-wavelength barriers
title_sort	optical lattice with spin-dependent sub-wavelength barriers
publisher	SciPost
publishDate	2021
url	https://doaj.org/article/dac5f1f03ba248758026498fd06c1164
work_keys_str_mv	AT edvinasgvozdiovaspovilasrackauskasgediminasjuzeliunas opticallatticewithspindependentsubwavelengthbarriers
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Optical lattice with spin-dependent sub-wavelength barriers

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