Details

Autor(en) / Beteiligte

• Pollack, S. E.
• Dries, D.
• Hulet, R. G.
• Magalhães, K. M. F.
• Henn, E. A. L.
• Ramos, E. R. F.
• Caracanhas, M. A.
• Bagnato, V. S.

Titel

Collective excitation of a Bose-Einstein condensate by modulation of the atomic scattering length

Ist Teil von

• Physical review. A, Atomic, molecular, and optical physics, 2010-05, Vol.81 (5), Article 053627

Ort / Verlag

United States

Erscheinungsjahr

2010

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We excite the lowest-lying quadrupole mode of a Bose-Einstein condensate by modulating the atomic scattering length via a Feshbach resonance. Excitation occurs at various modulation frequencies, and resonances located at the natural quadrupole frequency of the condensate and at the first harmonic are observed. We also investigate the amplitude of the excited mode as a function of modulation depth. Numerical simulations based on a variational calculation agree with our experimental results and provide insight into the observed behavior.