Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Robust micro-magnet design for fast electrical manipulations of single
  spins in quantum dots   Tailoring spin coupling to electric fields is central to spintronics and
spin-based quantum information processing. We present an optimal micromagnet
design that produces appropriate stray magnetic fields to mediate fast
electrical spin manipulations in nanodevices. We quantify the practical
requirements for spatial field inhomogeneity and tolerance for misalignment
with spins, and propose a design scheme to improve the spin-rotation frequency
(to exceed 50MHz in GaAs nanostructures). We then validate our design by
experiments in separate devices. Our results will open a route to rapidly
control solid-state electron spins with limited lifetimes and to study coherent
spin dynamics in solids.

7
The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con