Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Steerable optical tweezers for ultracold atom studies   We report on the implementation of an optical tweezer system for controlled
transport of ultracold atoms along a narrow, static confinement channel. The
tweezer system is based on high-efficiency acousto-optical deflectors and
offers two-dimensional control over beam position. This opens up the
possibility for tracking the transport channel when shuttling atomic clouds
along the guide, forestalling atom spilling. Multiple clouds can be tracked
independently by time-shared tweezer beams addressing individual sites in the
channel. The deflectors are controlled using a multichannel direct digital
synthesizer, which receives instructions on a sub-microsecond time scale from a
field-programmable gate array. Using the tweezer system, we demonstrate
sequential binary splitting of an ultracold $\rm^{87}Rb$ cloud into $2^5$
clouds.

31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess