Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transport Spectroscopy of a Spin-Coherent Dot-Cavity System   Quantum engineering requires controllable artificial systems with quantum
coherence exceeding the device size and operation time. This can be achieved
with geometrically confined low-dimensional electronic structures embedded
within ultraclean materials, with prominent examples being artificial atoms
(quantum dots) and quantum corrals (electronic cavities). Combining the two
structures, we implement a mesoscopic coupled dot-cavity system in a
high-mobility two-dimensional electron gas, and obtain an extended spin-singlet
state in the regime of strong dot-cavity coupling. Engineering such extended
quantum states presents a viable route for nonlocal spin coupling that is
applicable for quantum information processing.

36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph