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(a) Laser frequency for pump-, transfer-, imaging-, and depletion-lasers. (b) The atomic sample is held in a dipole trap and interrogated with linear pump, transfer, and imaging light from the side. The depletion laser is applied through the MOT beams.
Spatial distribution of transferred population into . The horizontal axis covers a field of view of . Free-evolution times are indicated for each frame. The solid line is the fit of the date with expression . The deduced parameters are , , , and . The additional decoherence in the center of the trap has a FWHM of .
Fourier analysis of gradient compensation. In (a) and (b), we plot the differential transmission before and after the compensation, respectively. The constant atom number distribution was subtracted. In plot (c), the FFT signal shows a successive reduction in the gradient from down to . The width of the resonant peaks suggests a gradient resolution of .
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