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Abstract
We present a method for transferring bosonic atoms residing on the lowest s band of an optical lattice to the first excited p bands. Our idea hinges on resonant tunneling between adjacent sites of accelerated lattices. The acceleration effectively shifts the quasibound energies on each site such that the system can be cast into a Wannier-Stark ladder problem. By adjusting the acceleration constant, a situation of resonant tunneling between the s and p bands is achievable. Within a mean-field model, considering 87Rb atoms, we demonstrate population transfer from the s to the p bands with around 95% efficiency. Nonlinear effects deriving from atom-atom interactions, as well as coupling of the quasibound Wannier-Stark states to the energy continuum, are considered.
Original language | English |
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Article number | 023621 |
Journal | Physical Review A |
Volume | 84 |
Publication status | Published - Aug 2011 |
MoE publication type | A1 Journal article-refereed |
Keywords
- optical lattice
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Dive into the research topics of 'Loading of bosons in optical lattices into the p band'. Together they form a unique fingerprint.Projects
- 1 Finished
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Kvanttitilat ja prosessit optisissa hiloissa
01/12/2010 → 31/07/2012
Project: Academy of Finland: Other research funding