Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Flexible entanglement-distribution network with an AlGaAs chip for
  secure communications   Quantum communication networks enable applications ranging from highly secure
communication to clock synchronization and distributed quantum computing.
Miniaturized, flexible, and cost-efficient resources will be key elements for
ensuring the scalability of such networks as they progress towards large-scale
deployed infrastructures. Here, we bring these elements together by combining
an on-chip, telecom-wavelength, broadband entangled photon source with
industry-grade flexible-grid wavelength division multiplexing techniques, to
demonstrate reconfigurable entanglement distribution between up to 8 users in a
resource-optimized quantum network topology. As a benchmark application we use
quantum key distribution, and show low error and high secret key generation
rates across several frequency channels, over both symmetric and asymmetric
metropolitan-distance optical fibered links and including finite-size effects.
By adapting the bandwidth allocation to specific network constraints, we also
illustrate the flexible networking capability of our configuration. Together
with the potential of our semiconductor source for distributing secret keys
over a 60 nm bandwidth with commercial multiplexing technology, these results
offer a promising route to the deployment of scalable quantum network
architectures.

37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an