Coherent control of atomic transport in spinor optical lattices

Physical Review A (Impact Factor: 2.99). 05/2009; 81(2). DOI: 10.1103/PhysRevA.81.023403
Source: arXiv

ABSTRACT Coherent transport of atoms trapped in an optical lattice can be controlled
by microwave-induced spin flips that correlate with site-to-site hopping. We
study the controllability of homogeneous one-dimensional systems of
noninteracting atoms in the absence of site addressability. Given these
restrictions, we construct a deterministic protocol to map an initially
localized Wannier state to a wave packet that that is coherently distributed
over n sites. This is extended to analytic solutions for arbitrary unitary maps
given homogenous systems and in the presence of time-dependent uniform forces.
Such control is important for applications in quantum information processing
such as quantum computing and quantum simulations of condensed matter

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