Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Twin-field quantum digital signatures   Digital signature is a key technique in information security, especially for
identity authentications. Compared with classical correspondence, quantum
digital signatures (QDSs) provide a considerably higher level of security,
i.e., information-theoretic security. At present, its performance is limited by
key generation protocols (e.g., BB84 or measurement-device-independent
protocols), which are fundamentally limited in terms of channel capacity.
Fortunately, the recently proposed twin-field quantum key distribution can
overcome this limit. This paper presents a twin-field QDS protocol and details
a corresponding security analysis. In its distribution stage, a specific key
generation protocol, the sending-or-not-sending twin-field protocol, has been
adopted and full parameter optimization method has been implemented. Numerical
simulation results show that the new protocol exhibits outstanding security and
practicality compared with all other existing protocols. Therefore, the new
protocol paves the way toward real-world applications of QDSs

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The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th