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13 papers
Semi-classical Dynamics of Superradiant Rayleigh Scattering in a Bose-Einstein Condensate
J. H. Müller, D. Witthaut, R. le Targat +3
Due to its coherence properties and high optical depth, a Bose-Einstein condensate provides an ideal setting to investigate collective atom-light interactions. Superradiant light s…
In-trap fluorescence detection of atoms in a microscopic dipole trap
A. J. Hilliard, Y. H. Fung, P. Sompet +2
We investigate fluorescence detection using a standing wave of blue-detuned light of one or more atoms held in a deep, microscopic dipole trap. The blue-detuned standing wave reali…
Spin dynamics in a two dimensional quantum gas
Poul L. Pedersen, Miroslav Gajdacz, Frank Deuretzbacher +5
We have investigated spin dynamics in a 2D quantum gas. Through spin-changing collisions, two clouds with opposite spin orientations are spontaneously created in a Bose-Einstein co…
Production and manipulation of wave packets from ultracold atoms in an optical lattice
Poul L. Pedersen, Miroslav Gajdacz, Nils Winter +3
Within the combined potential of an optical lattice and a harmonic magnetic trap, it is possible to form matter wave packets by intensity modulation of the lattice. An analysis of…
Non-destructive Faraday imaging of dynamically controlled ultracold atoms
Miroslav Gajdacz, Poul L. Pedersen, Troels Mørch +3
We describe an easily implementable method for non-destructive measurements of ultracold atomic clouds based on dark field imaging of spatially resolved Faraday rotation. The signa…
Observation and measurement of "giant" dispersive optical non-linearities in an ensemble of cold Rydberg atoms
Valentina Parigi, Erwan Bimbard, Jovica Stanojevic +5
We observe and measure dispersive optical non-linearities in an ensemble of cold Rydberg atoms placed inside an optical cavity. The experimental results are in agreement with a sim…