Periodic Wannier-Stark ladder structures of the energy resonances associated with Bloch oscillations can be readily modified into quasi-periodic ones that exhibit peculiar self-similar effects. A compact theoretical description of the dynamics of driven Bloch oscillations is developed here within the quasi-momentum representation. We identify a rather viable scheme based on ultracold atomic wavepackets subject to gravity in a driven optical lattice potential where a self-similar scaling could be observed. Its feasibility in terms of realistic experimental parameters is also discussed.
Quasi-periodic Wannier-Stark ladders from driven atomic Bloch oscillations / Artoni, M.; La Rocca, G. C.; Ferrari, G.. - In: PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON. SERIES A. - ISSN 1364-5021. - 470:2171(2014), pp. 20140421.1-20140421.19. [10.1098/rspa.2014.0421]
Quasi-periodic Wannier-Stark ladders from driven atomic Bloch oscillations
Ferrari G.
2014-01-01
Abstract
Periodic Wannier-Stark ladder structures of the energy resonances associated with Bloch oscillations can be readily modified into quasi-periodic ones that exhibit peculiar self-similar effects. A compact theoretical description of the dynamics of driven Bloch oscillations is developed here within the quasi-momentum representation. We identify a rather viable scheme based on ultracold atomic wavepackets subject to gravity in a driven optical lattice potential where a self-similar scaling could be observed. Its feasibility in terms of realistic experimental parameters is also discussed.File | Dimensione | Formato | |
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2014-PRSA-Quasi-periodic Wannier−Stark ladders from driven atomic Bloch oscillations.pdf
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