Effect of filter shape on excess noise performance in continuous variable quantum key distribution with Gaussian modulation

Hou-Man Chin*, Nitin Jain, Darko Zibar, Tobias Gehring, Ulrik L. Andersen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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An attractive implementation for quantum cryptography is the continuous variable variation, as it relies on standard telecommunication components. Modulating the quantum signal using a Gaussian format is attractive since ithas been proven to be secure. This work investigates the effect of the roll-off of a root raised cosine pulse shaping and matched filter on the excess noise performance of a Gaussian modulated quantum key distribution system in a simulated back to back configuration. Contrary to intuition, it is found that the roll-off parameter does not significantly impact the performance of the system.
Original languageEnglish
Publication statusSubmitted - 2020

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