Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum key distribution over multicore fiber   We present the first quantum key distribution (QKD) experiment over multicore
fiber. With space division multiplexing, we demonstrate that weak QKD signals
can coexist with classical data signals launched at full power in a 53 km
7-core fiber, while showing negligible degradation in performance. Based on a
characterization of intercore crosstalk, we perform additional simulations
highlighting that classical data bandwidths beyond 1Tb/s can be supported with
high speed QKD on the same fiber.

26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
19
The categories of this paper are: eess