Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asynchronous reference frame agreement in a quantum network   An efficient implementation of many multiparty protocols for quantum networks
requires that all the nodes in the network share a common reference frame.
Establishing such a reference frame from scratch is especially challenging in
an asynchronous network where network links might have arbitrary delays and the
nodes do not share synchronised clocks. In this work, we study the problem of
establishing a common reference frame in an asynchronous network of $n$ nodes
of which at most $t$ are affected by arbitrary unknown error, and the
identities of the faulty nodes are not known. We present a protocol that allows
all the correctly functioning nodes to agree on a common reference frame as
long as the network graph is complete and not more than $t<n/4$ nodes are
faulty. As the protocol is asynchronous, it can be used with some assumptions
to synchronise clocks over a network. Also, the protocol has the appealing
property that it allows any existing two-node asynchronous protocol for
reference frame agreement to be lifted to a robust protocol for an asynchronous
quantum network.

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th