Quantum key distribution over multicore fiber

Dynes, JF; Kindness, Stephen; Tam, SW-B; Plews, A; Sharpe, AW; Lucamarini, M; Fröhlich, B; Yuan, ZL; Penty, Richard; Shields, AJ

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Authors

Dynes, JF

Kindness, Stephen

Tam, SW-B

Plews, A

Sharpe, AW

Lucamarini, M

Fröhlich, B

Publication Date

2016-04-06

Journal Title

Optics Express

ISSN

1094-4087

Publisher

The Optical Society

Volume

Pages

8081-8087

Language

English

Type

Article

Metadata

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Citation

Dynes, J., Kindness, S., Tam, S., Plews, A., Sharpe, A., Lucamarini, M., Fröhlich, B., et al. (2016). Quantum key distribution over multicore fiber. Optics Express, 24 8081-8087. https://doi.org/10.1364/OE.24.008081

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.

Keywords

quantum communications, quantum cryptography, fiber optics communications

Sponsorship

S.J.K. acknowledges support from the EPSRC CDT in Photonic Systems Development.

Funder references

EPSRC (EP/H022384/1)

Identifiers

External DOI: https://doi.org/10.1364/OE.24.008081

This record's URL: https://www.repository.cam.ac.uk/handle/1810/255094

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