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Benefits of time-frequency coding for quantum key distribution

: Rödiger, J.; Perlot, N.; Benson, O.; Freund, R.


Cugny, B. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
International Conference on Space Optics, ICSO 2016 : 18-21 October 2016, Biarritz, France
Bellingham, WA: SPIE, 2017 (Proceedings of SPIE 10562)
ISBN: 978-1-5106-1613-4
Paper 105623N, 7 S.
International Conference on Space Optics (ICSO) <2016, Biarritz>
Fraunhofer HHI ()

Quantum key distribution (QKD), the first applicable quantum technology, is able to distribute a secret key to two parties. This key can then be used as a one-time-pad for absolutely secure communication. The first QKD protocol was the polarization based BB84 protocol proposed in [1]. Since then many QKD protocols have been proposed and investigated [2, 3].