论文标题
量子爱丽丝和寂静的鲍勃：基于Qubit的量子键回收，几乎没有古典交流
Quantum Alice and Silent Bob: Qubit-based Quantum Key Recycling with almost no classical communication
论文作者
论文摘要
我们回答了一个关于量子密钥回收（QKR）的开放问题：是否可以将消息完全放入Qubits中而不增加Qubits的数量？我们证明这确实是可能的。我们介绍了一个准备和衡量QKR协议，其中从爱丽丝到鲍勃的通信完全由Qubits组成。像往常一样，鲍勃以一位经过认证的一位接受/拒绝经典信息做出回应。与量子密钥分布（QKD）相比，QKR降低了圆形复杂性。与以前的QKR协议相比，我们的方案的古典交流要少得多。我们在通用合并性框架中提供了安全性证明，并发现通信速率与单向后处理的QKD渐近相同。
We answer an open question about Quantum Key Recycling (QKR): Is it possible to put the message entirely in the qubits without increasing the number of qubits? We show that this is indeed possible. We introduce a prepare-and-measure QKR protocol where the communication from Alice to Bob consists entirely of qubits. As usual, Bob responds with an authenticated one-bit accept/reject classical message. Compared to Quantum Key Distribution (QKD), QKR has reduced round complexity. Compared to previous qubit-wise QKR protocols, our scheme has far less classical communication. We provide a security proof in the universal composability framework and find that the communication rate is asymptotically the same as for QKD with one-way postprocessing.
