Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum computing, phase estimation and applications   In this thesis, attention is paid to small experimental testbed applications
with respect to the quantum phase estimation algorithm, the core approach for
finding energy eigenvalues. An iterative scheme for quantum phase estimation
(IPEA) is derived from the Kitaev phase estimation, a study of robustness of
the IPEA utilized as a few-qubit testbed application is performed, and an
improved protocol for phase reference alignment is presented. Additionally, a
short overview of quantum cryptography is given, with a particular focus on
quantum steganography and authentication.

8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th