Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coherent Atom-Molecule Oscillations in a Bose-Fermi Mixture   We create atom-molecule superpositions in a Bose-Fermi mixture of Rb-87 and
K-40 atoms. The superpositions are generated by ramping an applied magnetic
field near an interspecies Fano-Feshbach resonance to coherently couple atom
and molecule states. Rabi- and Ramsey-type experiments show oscillations in the
molecule population that persist as long as 150 microseconds and have up to 50%
contrast. The frequencies of these oscillations are magnetic-field dependent
and consistent with the predicted molecule binding energy. This quantum
superposition involves a molecule and a pair of free particles with different
statistics (i.e. bosons and fermions), and furthers exploration of
atom-molecule coherence in systems without a Bose-Einstein condensate.

33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph