Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum state transfer in the presence of non homogeneous external
  potentials   Heisenberg-type spin models in the limit of a low number of excitations are
useful tools to study basic mechanisms in strongly correlated and magnetic
systems. Many of these mechanisms can be experimentally tested using ultracold
atoms. Here, we discuss the implementation of a quantum state transfer protocol
in a tight-binding chain in the presence of an inhomogeneous external
potential. We show that it can be used to extend the parameter range in which
high fidelity state transfer can be achieved beyond the well established
weak-coupling regime. Among the class of mirror-reflecting potentials that
allow for high-fidelity quantum state transfer, the harmonic case is especially
relevant because it allows us to formulate a proposal for the experimental
implementation of the protocol in the context of optical lattices.

1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph