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arXiv · 2512.08623

An Efficient Secret Communication Scheme for the Bosonic Wiretap Channel

Esther Hänggi·Iyán Méndez Veiga·Ligong Wang
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Abstract

We propose a new secret communication scheme over the bosonic wiretap channel. It uses readily available hardware such as lasers and direct photodetectors. The scheme is based on randomness extractors, pulse-position modulation, and Reed-Solomon codes and is therefore computationally efficient. It is secure against an eavesdropper performing coherent joint measurements on the quantum states it observes. In the low-photon-flow limit, the scheme is asymptotically optimal and achieves the same dominant term as the secrecy capacity of the same channel.

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Esther Hänggi, Iyán Méndez Veiga, Ligong Wang. 2025-12-09. An Efficient Secret Communication Scheme for the Bosonic Wiretap Channel. https://doi.org/10.1109/lcomm.2025.3625640

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