270 citations · 926 across the 9 of their papers we have counts for
9 papers
Measurement of the Casimir-Polder force through center-of-mass oscillations of a Bose-Einstein condensate
D. M. Harber, J. M. Obrecht, J. M. McGuirk +1
We have performed a measurement of the Casimir-Polder force using a magnetically trapped 87-Rb Bose-Einstein condensate. By detecting perturbations of the frequency of center-of-ma…
Alkali adsorbate polarization on conducting and insulating surfaces probed with Bose-Einstein condensates
J. M. McGuirk, D. M. Harber, J. M. Obrecht +1
A magnetically trapped 87Rb Bose-Einstein condensate is used as a sensitive probe of short-range electrical forces. In particular, the electric polarization of, and the subsequent…
Decoherence-driven Cooling of a Degenerate Spinor Bose Gas
H. J. Lewandowski, J. M. McGuirk, D. M. Harber +1
We investigate the relationship between the coherence of a partially Bose-condensed spinor gas and its temperature. We observe cooling of the normal component driven by decoherence…
Thermally Induced Losses in Ultra-Cold Atoms Magnetically Trapped Near Room-Temperature Surfaces
D. M. Harber, J. M. McGuirk, J. M. Obrecht +1
We have measured magnetic trap lifetimes of ultra-cold Rb87 atoms at distances of 5-1000 microns from surfaces of conducting metals with varying resistivity. Good agreement is foun…
Normal-superfluid interaction dynamics in a spinor Bose gas
J. M. McGuirk, D. M. Harber, H. J. Lewandowski +1
Coherent behavior of spinor Bose-Einstein condensates is studied in the presence of a significant uncondensed (normal) component. Normal-superfluid exchange scattering leads to a n…
The Mystery of the Ramsey Fringe that Didn't Chirp
D. M. Harber, H. J. Lewandowski, J. M. McGuirk +1
We use precision microwave spectroscopy of magnetically trapped, ultra-cold 87Rb to characterize intra- and inter-state density correlations. The cold collision shifts for both nor…