Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-resolved spectroscopy of helical Andreev bound states   We propose a versatile setup that allows performing spin-resolved
spectroscopy of helical Andreev bound states, proving their existence and
therefore the topological nature of the Josephson junction that hosts them. The
latter is realized on the helical edge of a 2D topological insulator,
proximitized with two superconducting electrodes. The spectroscopic analysis is
enabled by a quantum point contact, which couples the junction with another
helical edge acting as a spin-sensitive prove. By means of straightforward
transport measurements, it is possible to detect the particular spin structure
of the helical Andreev bound state and to shine light on the mechanism
responsible for their existence, i.e. the presence of protected Andreev
reflection within the Josephson junction. We discuss the robustness of this
helical Andreev spectrometer with respect to processes that weaken spin to
charge conversion.

21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn