Control of interaction-induced dephasing of bloch oscillations
Gustavsson M, Haller E, Mark M, Danzl JG, Rojas Kopeinig G, Nägerl H. 2008. Control of interaction-induced dephasing of bloch oscillations. Physical Review Letters. 100(8).
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Author
Gustavsson, Mattias;
Haller, Elmar;
Mark, Manfred;
Danzl, Johann GISTA 
;
Rojas Kopeinig, Gabriel;
Nägerl, Hanns
;
Rojas Kopeinig, Gabriel;
Nägerl, HannsAbstract
We report on the control of interaction-induced dephasing of Bloch oscillations for an atomic Bose-Einstein condensate in an optical lattice. We quantify the dephasing in terms of the width of the quasimomentum distribution and measure its dependence on time for different interaction strengths which we control by means of a Feshbach resonance. For minimal interaction, the dephasing time is increased from a few to more than 20 thousand Bloch oscillation periods, allowing us to realize a BEC-based atom interferometer in the noninteracting limit.
Publishing Year
Date Published
2008-02-28
Journal Title
Physical Review Letters
Publisher
American Physical Society
Acknowledgement
We thank A. Daley for theoretical support and for help with
setting up the numerical calculations and A. Buchleitner
and his group for useful discussions. We are grateful to
A. Liem and H. Zellmer for valuable assistance in setting
up the 1064 nm fiber amplifier system. We acknowledge
contributions by P. Unterwaditzer and T. Flir during the
early stages of the experiment. We are indebted to
R. Grimm for generous support and gratefully acknowledge funding by the Austrian Ministry of Science and
Research (BMWF) and the Austrian Science Fund (FWF).
Volume
100
Issue
8
IST-REx-ID
Cite this
Gustavsson M, Haller E, Mark M, Danzl JG, Rojas Kopeinig G, Nägerl H. Control of interaction-induced dephasing of bloch oscillations. Physical Review Letters. 2008;100(8). doi:10.1103/PhysRevLett.100.080404
Gustavsson, M., Haller, E., Mark, M., Danzl, J. G., Rojas Kopeinig, G., & Nägerl, H. (2008). Control of interaction-induced dephasing of bloch oscillations. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.100.080404
Gustavsson, Mattias, Elmar Haller, Manfred Mark, Johann G Danzl, Gabriel Rojas Kopeinig, and Hanns Nägerl. “Control of Interaction-Induced Dephasing of Bloch Oscillations.” Physical Review Letters. American Physical Society, 2008. https://doi.org/10.1103/PhysRevLett.100.080404.
M. Gustavsson, E. Haller, M. Mark, J. G. Danzl, G. Rojas Kopeinig, and H. Nägerl, “Control of interaction-induced dephasing of bloch oscillations,” Physical Review Letters, vol. 100, no. 8. American Physical Society, 2008.
Gustavsson M, Haller E, Mark M, Danzl JG, Rojas Kopeinig G, Nägerl H. 2008. Control of interaction-induced dephasing of bloch oscillations. Physical Review Letters. 100(8).
Gustavsson, Mattias, et al. “Control of Interaction-Induced Dephasing of Bloch Oscillations.” Physical Review Letters, vol. 100, no. 8, American Physical Society, 2008, doi:10.1103/PhysRevLett.100.080404.
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