量子 MIMO 信道中的分集与复用
Diversity and Multiplexing in Quantum MIMO Channels
AI总结：
本文将近似量子克隆引入含串扰、损耗和退极化噪声的量子 MIMO 信道，通过传输同一量子态的多副本，给出平均保真度与通信速率间的可实现折中。
摘要：
在多输入多输出（MIMO）通信中，对发射机与接收机之间多条信道的表征和利用，为经典通信系统带来了范式转变。围绕 MIMO 通信系统发展出的技术，不仅使通信速率取得了前所未有的进步，还通过较低的错误率显著提高了通信可靠性。在这里，我们在量子 MIMO 通信范式中探索相同的思想。具体而言，我们利用近似量子克隆，在一条包含串扰、损耗和退极化噪声的 MIMO 信道上传输同一量子态的多个副本。通过这一策略，我们在该 MIMO 设置下发现了平均保真度与通信速率之间一种可实现的折中关系。
英文摘要：
Characterization and exploitation of multiple channels between the transmitter and the receiver in multiple-input multiple-output (MIMO) communications brought a paradigm shift in classical communication systems. The techniques developed around MIMO communication systems not only brought unprecedented advancements in the communication rates but also substantially improved the reliability of communication, measured by low error rates. Here, we explore the same ideas in the paradigm of quantum MIMO communication. Specifically, we utilize approximate quantum cloning to transmit multiple copies of the same quantum state over a MIMO channel that incorporates crosstalk, losses, and depolarizing noise. With this strategy, we find an achievable tradeoff between the average fidelity and communication rate over this MIMO setup.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
