Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dirac particle dynamics of a superconducting circuit   The core concept of quantum simulation is the mapping of an inaccessible
quantum system onto a controllable one by identifying analogous dynamics. We
map the Dirac equation of relativistic quantum mechanics in 3+1 dimensions onto
a multi-level superconducting Josephson circuit. Resonant drives determine the
particle mass and momentum and the quantum state represents the internal spinor
dynamics, which are cast in the language of multi-level quantum optics. The
degeneracy of the Dirac spectrum corresponds to a degeneracy of bright/dark
states within the system and particle spin and helicity are employed to
interpret the multi-level dynamics. We simulate the Schwinger mechanism of
electron-positron pair production by introducing an analogous electric field as
a doubly degenerate Landau-Zener problem. All proposed measurements can be
performed well within typical decoherence times. This work opens a new avenue
for experimental study of the Dirac equation and provides a tool for control of
complex dynamics in multi-level systems.

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The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga