Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interferometry with non-classical motional states of a Bose-Einstein
  condensate   We demonstrate a two-pulse Ramsey-type interferometer for non-classical
motional states of a Bose-Einstein condensate in an anharmonic trap. The
control pulses used to manipulate the condensate wavefunction are obtained from
Optimal Control Theory and directly optimised to maximise the interferometric
contrast. They permit a fast manipulation of the atomic ensemble compared to
the intrinsic decay and many-body dephasing effects, and thus to reach an
interferometric contrast of 92% in the experimental implementation.

7
The categories of this paper are: hep-th
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
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
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
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The categories of this paper are: eess
20
The categories of this paper are: acc-phys