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Continued imaging of the transport of a single neutral atom

Y. Miroshnychenko, D. Schrader, S. Kuhr, W. Alt, I. Dotsenko, M. Khudaverdyan, A. Rauschenbeutel, and D. Meschede

Open Access Open Access

Abstract

We have continuously imaged the controlled motion of a single atom as well as of a small number of distinguishable atoms with observation times exceeding one minute. The Cesium atoms are confined to potential wells of a standing wave optical dipole trap which allows to transport them over macroscopic distances. The atoms are imaged by an intensified CCD camera, and spatial resolution near the diffraction limit is obtained.

©2003 Optical Society of America

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Supplementary Material (2)

Media 1: MOV (89 KB)     
Media 2: MOV (316 KB)     

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Figures (4)
Fig. 1.
Fig. 1. Scheme of the experimental setup. The fluorescence light from the MOT is collimated and divided into two parts by the beam splitter. One part is sent onto the APD, while the other part is imaged onto the intensified CCD camera.

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Fig. 2.
Fig. 2. a) CCD image of one atom stored in the MOT (exposure time 1s). The counts are binned in the vertical and horizontal directions and fitted with Gaussians to determine the size and the absolute position of the trap. b) One atom in a potential well of the DT illuminated by an optical molasses (Exposure time 0.5s).

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Fig. 3.
Fig. 3. (89 KB) Controlled transport of one neutral atom over a distance of 60µm during some tens of seconds.

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Fig. 4.
Fig. 4. (316 KB) Transport of three neutral atoms.

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