Quantum tweezer for atoms.
We propose a quantum tweezer for extracting a desired number of neutral atoms from a reservoir. A trapped Bose-Einstein condensate 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 at certain speeds, the dot can extract a desired number of atoms from the condensate through Landau-Zener tunneling. The feasibility of our quantum tweezer is demonstrated through realistic and extensive model calculations.
Department of Physics, The University of Texas, Austin 78712-1081, USA.
Roberto B
RB
Diener
Biao
B
Wu
Mark G
MG
Raizen
Qian
Q
Niu