Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photo-induced spin filtering in a double quantum dot   We investigate the spin-resolved electron dynamics in a double quantum dot
driven by ultrafast asymmetric electromagnetic pulses. Using a analytical model
we show that applying an appropriate pulse sequence allows to control
coherently the spin degree of freedom on the femtosecond time scale. It can be
achieved that the spin-up state is localized in a selected quantum dot while
the spin-down state remains in the other dot. We show that this photo-induced
spin-dependent separation can be maintained for a desired period of time.

35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg