论文标题
量子钟的压缩
Compression for Qubit Clocks
论文作者
论文摘要
两型（Qubit）时钟系统通常用于执行时间的精确度量。在这项工作中，我们为$ n $准备的量子钟状态提出了一个压缩协议。该协议将状态忠实地编码为$（1/2）\ log n $ Qubits和$（1/2）\ log n $经典位，即使在噪声存在的情况下也可以工作。如果固定时钟状态的纯度，则$（1/2）\ log n $ Qubits就足够了。我们还证明，该协议需要在所有协议中最少的总内存量，并且在大$ n $限制中消失了错误。
Two-Ievel (qubit) clock systems are often used to perform precise measurement of time. In this work, we propose a compression protocol for $n$ identically prepared states of qubit clocks. The protocol faithfully encodes the states into $(1/2)\log n$ qubits and $(1/2)\log n$ classical bits and works even in the presence of noise. If the purity of the clock states is fixed, $(1/2)\log n$ qubits are sufficient. We also prove that this protocol requires the minimum amount of total memory among all protocols with vanishing error in the large $n$ limit.
