%0 Journal Article
%T A Single Atom Transistor in a 1D Optical Lattice
%A A. Micheli
%A A. J. Daley
%A D. Jaksch
%A P. Zoller
%J Physics
%D 2004
%I arXiv
%R 10.1103/PhysRevLett.93.140408
%X We propose a scheme utilising a quantum interference phenomenon to switch the transport of atoms in a 1D optical lattice through a site containing an impurity atom. The impurity represents a qubit which in one spin state is transparent to the probe atoms, but in the other acts as a single atom mirror. This allows a single-shot quantum non-demolition measurement of the qubit spin.
%U http://arxiv.org/abs/quant-ph/0406020v1