An Efficient Secret Communication Scheme for the Bosonic Wiretap Channel

• URL: http://arxiv.org/abs/2512.08623v1
• Date: Tue, 09 Dec 2025 14:09:36 GMT
• Title: An Efficient Secret Communication Scheme for the Bosonic Wiretap Channel
• Abstract summary: We propose a new secret communication scheme over the bosonic wiretap channel.<n>It uses readily available hardware such as lasers and direct photodetectors.
• Score: 7.022232312333217
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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