Stability of a dipolar Bose-Einstein condensate in a one-dimensional lattice

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.84.053601· OSTI ID:22093582

Mueller, S.; Billy, J.; Henn, E. A. L.; Kadau, H.; Griesmaier, A.; Pfau, T. ^[1]; Jona-Lasinio, M.; Santos, L. ^[2]

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1. Physikalisches Institut, Universitaet Stuttgart, Pfaffenwaldring 57, D-70569 Stuttgart (Germany)
2. Institut fuer Theoretische Physik, Leibniz Universitaet Hannover, D-30167 Hannover (Germany)

We show that in contrast with contact interacting gases, an optical lattice changes drastically the stability properties of a dipolar condensate, inducing a crossover from dipolar destabilization to dipolar stabilization for increasing lattice depths. Performing stability measurements on a {sup 52}Cr Bose-Einstein condensate in an interaction-dominated regime, repulsive dipolar interaction balances negative scattering lengths down to -17 Bohr radii. Our findings are in excellent agreement with mean-field calculations, revealing the important destabilizing role played by intersite dipolar interactions in deep lattices.

• OSTI ID: 22093582
• Journal Information: Physical Review. A, Vol. 84, Issue 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
74 ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
CHROMIUM 52
MEAN-FIELD THEORY
ONE-DIMENSIONAL CALCULATIONS
SCATTERING LENGTHS
STABILITY
STABILIZATION