Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin State Transfer in Laterally Coupled Quantum Dot Chains with
  Disorders   Quantum dot arrays are a promising media for transferring quantum information
between two distant points without resorting to mobile qubits. Here we study
two most common disorders namely, hyperfine interaction and exchange coupling
fluctuations, in quantum dot arrays and their effects on quantum communication
through these chains. Our results show that the hyperfine interaction is more
destructive than the exchange coupling fluctuations. The average optimal time
for communication is not affected by any disorder in the system and our
simulations show that anti-ferromagnetic chains are much more resistive than
the ferromagnetic ones against both kind of disorders. Even when time
modulation of a coupling and optimal control is employed to improve the
transmission, the anti-ferromagnetic chain performs much better. We have
assumed the quasi-static approximation for hyperfine interaction and time
dependent fluctuations in the exchange couplings. Particularly, for studying
exchange coupling fluctuations we have considered the static disorder, white
noise and $1/f$ noise.

29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga