Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions
Mark M, Haller E, Lauber K, Danzl JG, Janisch A, Büchler H, Daley A, Nägerl H. 2012. Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions. Physical Review Letters. 108(21).
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Author
Mark, Manfred;
Haller, Elmar;
Lauber, Katharina;
Danzl, Johann GISTA 
;
Janisch, Alexander;
Büchler, Hans;
Daley, Andrew;
Nägerl, Hanns
;
Janisch, Alexander;
Büchler, Hans;
Daley, Andrew;
Nägerl, HannsAbstract
We prepare and study a metastable attractive Mott-insulator state formed with bosonic atoms in a three-dimensional optical lattice. Starting from a Mott insulator with Cs atoms at weak repulsive interactions, we use a magnetic Feshbach resonance to tune the interactions to large attractive values and produce a metastable state pinned by attractive interactions with a lifetime on the order of 10 s. We probe the (de)excitation spectrum via lattice modulation spectroscopy, measuring the interaction dependence of two- and three-body bound-state energies. As a result of increased on-site three-body loss we observe resonance broadening and suppression of tunneling processes that produce three-body occupation.
Publishing Year
Date Published
2012-05-25
Journal Title
Physical Review Letters
Acknowledgement
We are indebted to R. Grimm for generous support. We thank J. von Stecher, P. Johnson, and E. Tiesinga for fruitful discussions. We gratefully acknowledge funding by the Austrian Science Fund (FWF) within Project No. I153-N16 and within the framework of the European Science Foundation (ESF) EuroQUASAR collective research project QuDeGPM, and by the European Research Council (ERC) under Project No. 278417.
Volume
108
Issue
21
IST-REx-ID
Cite this
Mark M, Haller E, Lauber K, et al. Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions. Physical Review Letters. 2012;108(21). doi:10.1103/PhysRevLett.108.215302
Mark, M., Haller, E., Lauber, K., Danzl, J. G., Janisch, A., Büchler, H., … Nägerl, H. (2012). Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions. Physical Review Letters. American Physical Society. https://doi.org/10.1103/PhysRevLett.108.215302
Mark, Manfred, Elmar Haller, Katharina Lauber, Johann G Danzl, Alexander Janisch, Hans Büchler, Andrew Daley, and Hanns Nägerl. “Preparation and Spectroscopy of a Metastable Mott-Insulator State with Attractive Interactions.” Physical Review Letters. American Physical Society, 2012. https://doi.org/10.1103/PhysRevLett.108.215302.
M. Mark et al., “Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions,” Physical Review Letters, vol. 108, no. 21. American Physical Society, 2012.
Mark M, Haller E, Lauber K, Danzl JG, Janisch A, Büchler H, Daley A, Nägerl H. 2012. Preparation and spectroscopy of a metastable mott-insulator state with attractive interactions. Physical Review Letters. 108(21).
Mark, Manfred, et al. “Preparation and Spectroscopy of a Metastable Mott-Insulator State with Attractive Interactions.” Physical Review Letters, vol. 108, no. 21, American Physical Society, 2012, doi:10.1103/PhysRevLett.108.215302.
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