Quantum key distribution over multicore fiber
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Peer-reviewed
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Abstract
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.
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Keywords
quantum communications, quantum cryptography, fiber optics communications
Journal Title
Optics Express
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Journal ISSN
1094-4087
1094-4087
1094-4087
Volume Title
24
Publisher
The Optical Society
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Sponsorship
Engineering and Physical Sciences Research Council (EP/H022384/1)
S.J.K. acknowledges support from the EPSRC CDT in Photonic Systems Development.