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Atoms in a Radio-Frequency-Dressed Optical Lattice



Ian B. Spielman, James V. Porto, William D. Phillips, Ben Brown, Patricia Lee, Nathan Lundblad


We load cold atoms into an optical lattice dramatically reshaped by radio-frequency coupling of statedependent lattice potentials. This radio-frequency dressing changes the unit cell of the lattice at a subwavelength scale, such that its curvature and topology departs strongly from that of a simple sinusoidal lattice potential. Radio-frequency dressing has previously been performed at length scales from mm to tens of !m, but not at the single-optical-wavelength scale. At this length scale significant coupling between adiabatic potentials leads to nonadiabatic transitions, which we measure as a function of lattice depth and dressing amplitude. We also investigate the dressing by measuring changes in the momentum distribution of the dressed states.
Physical Review Letters


Bose-Einstein Condensate, optical lattice


Spielman, I. , Porto, J. , Phillips, W. , Brown, B. , Lee, P. and Lundblad, N. (2008), Atoms in a Radio-Frequency-Dressed Optical Lattice, Physical Review Letters, [online], (Accessed June 19, 2024)


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Created April 18, 2008, Updated July 2, 2018