Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct measurement of hyperfine shifts and radiofrequency manipulation
  of the nuclear spins in individual CdTe/ZnTe quantum dots   We achieve direct detection of electron hyperfine shifts in individual
CdTe/ZnTe quantum dots. For the previously inaccessible regime of strong
magnetic fields $B_z\gtrsim0.1$ T, we demonstrate robust polarization of a
few-hundred-particle nuclear spin bath, with optical initialization time of
$\sim$ 1 ms and polarization lifetime exceeding $\sim$ 1 s. Nuclear magnetic
resonance spectroscopy of individual dots reveals strong electron-nuclear
interactions characterized by the Knight fields $|B_e|\gtrsim50$ mT, an order
of magnitude stronger than in III-V semiconductor quantum dots. Our studies
confirm II-VI semiconductor quantum dots as a promising platform for hybrid
electron-nuclear spin quantum registers, combining the excellent optical
properties comparable to III-V dots, and the dilute nuclear spin environment
similar to group-IV semiconductors.

18
The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th