Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microwave Sensing of Andreev Bound States in a Gate-Defined
  Superconducting Quantum Point Contact   We use a superconducting microresonator as a cavity to sense absorption of
microwaves by a superconducting quantum point contact defined by surface gates
over a proximitized two-dimensional electron gas. Renormalization of the cavity
frequency with phase difference across the point contact is consistent with
adiabatic coupling to Andreev bound states. Near $\pi$ phase difference, we
observe random fluctuations in absorption with gate voltage, related to quantum
interference-induced modulations in the electron transmission. We identify
features consistent with the presence of single Andreev bound states and
describe the Andreev-cavity interaction using a dispersive Jaynes-Cummings
model. By fitting the weak Andreev-cavity coupling, we extract ~GHz decoherence
consistent with charge noise and the transmission dispersion associated with a
localized state.

6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin