Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proposal for Implementing Device-Independent Quantum Key Distribution
  based on a Heralded Qubit Amplification   In device-independent quantum key distribution (DIQKD), the violation of a
Bell inequality is exploited to establish a shared key that is secure
independently of the internal workings of the QKD devices. An experimental
implementation of DIQKD, however, is still awaited, since hitherto all optical
Bell tests are subject to the detection loophole, making the protocol
unsecured. In particular, photon losses in the quantum channel represent a
fundamental limitation for DIQKD. Here, we introduce a heralded qubit amplifier
based on single-photon sources and linear optics that provides a realistic
solution to overcome the problem of channel losses in Bell tests.

1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph