Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherent transport of atomic wave packets in amplitude-modulated
  vertical optical lattices   We report on the realization of dynamical control of transport for ultra-cold
Sr88 atoms loaded in an accelerated and amplitude-modulated 1D optical lattice.
We tailor the energy dispersion of traveling wave packets and reversibly switch
between Wannier-Stark localization and driven transport based on coherent
tunneling. Within a Loschmidt-echo scheme where the atomic group velocities are
reversed at once, we demonstrate a novel mirror for matter waves working
independently of the momentum state and discuss possible applications to force
measurements at micrometric scales.

16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con