发表机构
Centre for Quantum Technologies, National University of Singapore; Aliro Technologies, Inc.（新加坡国立大学量子技术中心; 阿里罗科技有限公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究如何用量子资源更高效通信，提出量子密集网络编码协议，该协议利用纠缠和量子通信，用更少量子比特传输非布尔函数输出，其优势对噪声鲁棒，还产生新的量子密码协议。
AI 中文摘要
量子信息理论中的一个核心问题是理解如何利用量子资源比经典资源更高效地传输信息。我们引入了量子密集网络编码——一种协议，通过不传输函数输入的全部内容，每个发送者使用的量子比特数被证明只有比特数的一半，将非布尔函数的输出传输给接收者。我们表明这种优势既需要共享纠缠又需要量子通信，对噪声具有鲁棒性，并且量子与经典通信之间成功概率的差距可以随着发送者数量呈指数放大。最后，我们表明密集网络编码产生了一种新颖的、信息理论上安全的量子密码协议，我们称之为测量设备无关的量子密钥增长。
英文摘要
A central problem in quantum information theory is understanding how quantum resources can be used to communicate information more efficiently than classical resources. We introduce quantum dense network coding -- a protocol that transmits the output of a non-Boolean function to a receiver using provably half as many qubits as bits for each sender by not transmitting the entirety of the function inputs. We show this advantage requires both shared entanglement and quantum communication, is robust to noise, and the gap in success probability between quantum and classical communication can be amplified exponentially in the number of senders. Finally, we show that dense network coding gives rise to a novel, information-theoretically secure, quantum cryptographic protocol, which we call measurement-device-independent quantum key growing.
Comments12+50 pages. Comments welcome! v2: Fixed some confusing typos
