基于打孔码的延迟受限编码量子隐形传态
Latency-Constrained Encoded Quantum Teleportation with Punctured Codes
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中文总结 AI 辅助
研究延迟受限的编码量子隐形传态问题，开发统一框架，利用码打孔实现灵活编码隐形传态，结果表明编码隐形传态可提升可靠性，强调资源感知适配对可靠量子网络的重要性。
中文摘要 AI 辅助
量子隐形传态是利用纠缠和经典通信传输量子信息的关键协议，其可靠性受共享纠缠对可用性和保真度的限制。本文聚焦编码隐形传态，用量子纠错码编码量子信息并作为码字传输。在考虑延迟受限设置下，从逻辑错误概率评估可靠性。开发统一框架捕捉纠缠可用性、退相干和编码决策间的相互作用。结果表明长码的益处取决于纠缠对的可用性和保真度。利用码打孔实现灵活编码隐形传态，数值结果显示编码隐形传态比未编码传输可靠性更高，选择合适打孔码可提升不同延迟预算下的性能。
英文摘要
Quantum teleportation is a key protocol for transmitting quantum information using entanglement and classical communication. Its reliability is constrained by both the availability and fidelity of shared entangled pairs, which are affected by stochastic generation and memory decoherence. In this work, we focus on encoded teleportation, in which quantum information is encoded using a quantum error-correcting code and transmitted as a codeword. We evaluate reliability in terms of logical error probability, considering latency-constrained settings where entanglement is accumulated over time and degrades while in memory. We develop a unified framework that captures the interaction between entanglement availability, decoherence, and coding decisions. Our results show that the benefits of longer codes depend on the availability and fidelity of entangled pairs, as acquiring additional resources introduces delays that can reduce their quality. To address this latency-reliability tradeoff, we leverage code puncturing to enable flexible encoded teleportation, allowing the effective code length to adapt across different latency regimes while preserving a common stabilizer structure. Numerical results show that encoded teleportation can provide substantial reliability gains over uncoded transmission under a common entanglement-acquisition latency constraint, and that selecting appropriate punctured codes improves performance across varying latency budgets. Overall, our results highlight the importance of resource-aware adaptation for reliable quantum networking.
