Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum interference measurement of the free fall of anti-hydrogen   We analyze a quantum measurement designed to improve the accuracy for the
free-fall acceleration of anti-hydrogen in the GBAR experiment. Including the
effect of photo-detachment recoil in the analysis and developing a full quantum
analysis of anti-matter wave propagation, we show that the accuracy is improved
by approximately three orders of magnitude with respect to the classical timing
technique planned for the current experiment.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
2
The categories of this paper are: math
37
The categories of this paper are: supr-con