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.
© 2012 OSA
M. Anandan, S. Choudhary, and P. K. Kumar, "OFDM for Frequency Coded Quantum Key Distribution," in International Conference on Fibre Optics and Photonics, OSA Technical Digest (online) (Optical Society of America, 2012), paper W2A.6.
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