OFDM for Frequency Coded Quantum Key Distribution

Mukund Anandan; Saumya Choudhary; Pradeep Kumar K

doi:10.1364/PHOTONICS.2012.W2A.6

International Conference on Fibre Optics and Photonics
OSA Technical Digest (online) (Optica Publishing Group, 2012),
paper W2A.6
•https://doi.org/10.1364/PHOTONICS.2012.W2A.6

OFDM for Frequency Coded Quantum Key Distribution

Mukund Anandan, Saumya Choudhary, and Pradeep Kumar K

International Conference on Fibre Optics and Photonics 2012

Chennai India
9–12 December 2012
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Optical Fiber Communications & Networking I (W2A)

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M. Anandan, S. Choudhary, and P. K. K, "OFDM for Frequency Coded Quantum Key Distribution," in International Conference on Fibre Optics and Photonics, OSA Technical Digest (online) (Optica Publishing Group, 2012), paper W2A.6.

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Abstract

We propose OFDM to improve key generation rate of frequency-coded QKD system. Simulation results show raw keylength of 20 kbits/s for link lengths upto 50 km. Frequency guard bands and the choice of orthogonal sub-carrier spacing reduces noise power, leading to lower QBER and increased link length.

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