Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Manipulation of Multipartite Entanglement in an Array of Quantum Dots   Multipartite entanglement is indispensable in the implementation of quantum
technologies and the fundamental test of quantum mechanics. Here we study how
the W state and W-like state may be generated in a quantum-dot array by
controlling the coupling between an incident photon and the quantum dots on a
waveguide. We also discuss how the coupling may be controlled to observe the
sudden death of entanglement. Our work can find potential applications in
quantum information processing.

2
The categories of this paper are: math
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph