W. Alt, I. Dotsenko, L. Forster, M. Khudaverdyan, Y. Miroshnychenko, D. Schrader, A. Rausehenbeutel, D. Meschede
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Position and state control of single atoms using optical tweezers
A small known number of cesium atoms is loaded from a magneto-optical trap into a far detuned, standing wave optical dipole trap. This trap is made of two counter-propagating Nd:YAG laser beams (/spl lambda/= 1064 nm) which give rise to a chain of potential wells with a depth of about 1 mK and an axial spacing of 532 nm. By fitting the axial intensity distribution with a Gaussian function, the positions of the individual atoms are determined automatically with a precision of 100 nm rms, mainly limited by photon statistics.
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