Telecommunication Compatibility Evaluation for Co-existing Quantum Key Distribution in Homogenous Multicore Fiber
Journal article, 2020

Quantum key distribution (QKD) is regarded as an alternative to traditional cryptography methods for securing data communication by quantum mechanics rather than computational complexity. Towards the massive deployment of QKD, embedding it with the telecommunication system is crucially important. Homogenous optical multi-core fibers (MCFs) compatible with spatial division multiplexing (SDM) are essential components for the next-generation optical communication infrastructure, which provides a big potential for co-existence of optical telecommunication systems and QKD. However, the QKD channel is extremely vulnerable due to the fact that the quantum states can be annihilated by noise during signal propagation. Thus, investigation of telecom compatibility for QKD co-existing with high-speed classical communication in SDM transmission media is needed. In this paper, we present analytical models of the noise sources in QKD links over heterogeneous MCFs. Spontaneous Raman scattering and inter-core crosstalk are experimentally characterized over spans of MCFs with different refractive index profiles, emulating shared telecom traffic conditions. Lower bounds for the secret key rates and quantum bit error rate (QBER) due to different core/wavelength allocation are obtained to validate intra-and inter-core co-existence of QKD and classical telecommunication.

spatial division multiplexing

communication system security

Quantum key distribution

telecommunications

Author

Rui Lin

Chalmers, Electrical Engineering, Communication and Antenna Systems, Optical Networks

Aleksejs Udalcovs

RISE Research Institutes of Sweden

Oskars Ozolins

RISE Research Institutes of Sweden

Xiaodan Pang

Royal Institute of Technology (KTH)

Lin Gan

Huazhong University of Science and Technology

Ming Tang

Huazhong University of Science and Technology

Songnian Fu

Huazhong University of Science and Technology

Sergei Popov

Royal Institute of Technology (KTH)

T. Ferreira Da Silva

National Institute of Metrology, Quality and Technology

Guilherme B. Xiavier

Linköping University

Jiajia Chen

Chalmers, Electrical Engineering, Communication and Antenna Systems, Optical Networks

IEEE Communications Magazine

0163-6804 (ISSN)

Vol. 8 78836-78846

Subject Categories

Telecommunications

Communication Systems

DOI

10.1109/ACCESS.2020.2990186

More information

Latest update

6/26/2020