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Título:
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Realization of uniform synthetic magnetic fields by periodically shaking an optical square lattice.
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Autores:
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Creffield, Charles E. ;
Pieplow, G. ;
Sols Lucía, Fernando ;
Goldman, N.
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Tipo de documento:
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texto impreso
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Editorial:
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IOP Publishing, 2016-09-06
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Dimensiones:
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application/pdf
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Nota general:
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cc_by
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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Shaking a lattice system, by modulating the location of its sites periodically in time, is a powerful method to create effective magnetic fields in engineered quantum systems, such as cold gases trapped in optical lattices. However, such schemes are typically associated with space-dependent effective masses (tunneling amplitudes) and non-uniform flux patterns. In this work we investigate this phenomenon theoretically, by computing the effective Hamiltonians and quasienergy spectra associated with several kinds of lattice-shaking protocols. A detailed comparison with a method based on moving lattices, which are added on top of a main static optical lattice, is provided. This study allows the identification of novel shaking schemes, which simultaneously provide uniform effective mass and magnetic flux, with direct implications for cold-atom experiments and photonics.
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En línea:
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https://eprints.ucm.es/42009/1/Creffield%20C%2036%20LIBRE.pdf
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