Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum data locking for high-rate private communication   We show that, if the accessible information is used as a security quantifier,
quantum channels with a certain symmetry can convey private messages at a
tremendously high rate, as high as less than one bit below the rate of
non-private classical communication. This result is obtained by exploiting the
quantum data locking effect. The price to pay to achieve such a high private
communication rate is that accessible information security is in general not
composable. However, composable security holds against an eavesdropper who is
forced to measure her share of the quantum system within a finite time after
she gets it.

22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
19
The categories of this paper are: eess