Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference of Cooper quartet Andreev bound states in a multi-terminal
  graphene-based Josephson junction   In a Josephson junction (JJ), Cooper pairs are transported via Andreev bound
states (ABSs) between superconductors. The ABSs in the weak link of
multi-terminal (MT) JJs can coherently hybridize two Cooper pairs among
different superconducting electrodes, resulting in the Cooper quartet (CQ)
involving four fermions entanglement. The energy spectrum of these CQ-ABS can
be controlled by biasing MT-JJs due to the AC Josephson effect. Here, using
gate tunable four-terminal graphene JJs complemented with a flux loop, we
construct CQs with a tunable spectrum. The critical quartet supercurrent
exhibits magneto-oscillation associated with a charge of 4e; thereby presenting
the evidence for interference between entangled CQ-ABS. At a finite bias
voltage, we find the DC quartet supercurrent shows non-monotonic bias dependent
behavior, attributed to Landau-Zener transitions between different Floquet
bands. Our experimental demonstration of coherent non-equilibrium CQ-ABS sets a
path for design of artificial topological materials based on MT-JJs.

33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph