A Quantum Tweezer for Atoms

Details A Quantum Tweezer for Atoms A Quantum Tweezer for Atoms

2002-01-10

arxiv.org/abs/cond-mat/0201159v4

Phys. Rev. Lett. 89 (2002) 070401

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figures Revised version

Scientific paper

10.1103/PhysRevLett.89.070401

We propose a quantum tweezer for extracting a desired number of neutral atoms from a reservoir. A trapped Bose-Einstein condensate (BEC) is used as the reservoir, taking advantage of its coherent nature, which can guarantee a constant outcome. The tweezer is an attractive quantum dot, which may be generated by red-detuned laser light. By moving with certain speeds, the dot can extract a desired number of atoms from the BEC through Landau-Zener tunneling. The feasibility of our quantum tweezer is demonstrated through realistic and extensive model calculations.

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