Problem
Research questions and friction points this paper is trying to address.
Quantum Advantage
Multiple Access Wiretap Channel
Entangled Transmitters
Secrecy Capacity
Quantum Advantage in Multiple Access Wiretap Channels with Entangled Transmitters
🤖 AI Summary
研究了利用纠缠发送器在多址窃听信道中提高安全通信能力的问题，通过推导可实现速率区域和保密容量表达式，并给出单字母上界。
📝 Abstract
We investigate secure communication over a classical multiple-access wiretap channel (MAC-WTC), specifically exploring the benefit of shared entanglement between the transmitters. Under the strict semantic security criterion, we derive an achievable rate region and a regularized expression for the secrecy capacity. We further establish a single-letter upper bound on the secure capacity of the MAC-WTC with entangled transmitters. Our results demonstrate that entanglement strictly enlarges the secrecy capacity of MAC-WTC compared to sharing only classical correlated randomness, a finding we illustrate using a pseudo-telepathy game example. Finally, we establish new strong soft-covering lemmas for the output statistics of multipleaccess channels (MACs) with entangled transmitters. Our results generalize existing results for non-entangled systems.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Entanglement
Semantic Security
MAC-WTC
Secrecy Capacity
Soft-Covering Lemma
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