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An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate
Jean-Christophe Jaskula, Guthrie B. Partridge, Marie Bonneau +4
We have realized an acoustic analog to the Dynamical Casimir effect. The density of a trapped Bose-Einstein condensate is modulated by changing the trap stiffness. We observe the c…
Sub-Poissonian number differences in four-wave mixing of matter waves
Jean-Christophe Jaskula, Marie Bonneau, Guthrie B. Partridge +6
We demonstrate sub-Poissonian number differences in four-wave mixing of Bose-Einstein condensates of metastable helium. The collision between two Bose-Einstein condensates produces…
Bose-Einstein Condensation and Spin Mixtures of Optically Trapped Metastable Helium
G. B. Partridge, J. -C. Jaskula, M. Bonneau +2
We report the realization of a BEC of metastable helium-4 atoms (4He*) in an all optical potential. Up to 10^5 spin polarized 4He* atoms are condensed in an optical dipole trap for…
Spontaneous Four-Wave Mixing of de Broglie Waves: Beyond Optics
Valentina Krachmalnicoff, Jean-Christophe Jaskula, Marie Bonneau +8
We investigate the atom-optical analog of degenerate four-wave mixing of photons by colliding two Bose-Einstein condensates (BECs) of metastable helium and measuring the resulting…