1,425 research outputs found
Correlations and Counting Statistics of an Atom Laser
We demonstrate time-resolved counting of single atoms extracted from a weakly
interacting Bose-Einstein condensate of Rb atoms. The atoms are detected
with a high-finesse optical cavity and single atom transits are identified. An
atom laser beam is formed by continuously output coupling atoms from the
Bose-Einstein condensate. We investigate the full counting statistics of this
beam and measure its second order correlation function in a
Hanbury Brown and Twiss type experiment. For the monoenergetic atom laser we
observe a constant correlation function and an atom
number distribution close to a Poissonian statistics. A pseudo-thermal atomic
beam shows a bunching behavior and a Bose distributed counting statistics
Extension Publications
Summary of the discussion session on Extension Publications, discussion leader Don Esslinger
Molecules of Fermionic Atoms in an Optical Lattice
We create molecules from fermionic atoms in a three-dimensional optical
lattice using a Feshbach resonance. In the limit of low tunnelling, the
individual wells can be regarded as independent three-dimensional harmonic
oscillators. The measured binding energies for varying scattering length agree
excellently with the theoretical prediction for two interacting atoms in a
harmonic oscillator. We demonstrate that the formation of molecules can be used
to measure the occupancy of the lattice and perform thermometry.Comment: 4 page
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