论文标题
探索噪声中的经典相关性,以使用本地过滤恢复量子信息
Exploring classical correlations in noise to recover quantum information using local filtering
论文作者
论文摘要
一个由破碎和过滤元件组成的通用量子通道带有一个纠缠光子对的量子。当我们将局部过滤器应用于其他量子位时,两个量子位之间的一些相互量子信息会根据混合到信号中的噪声的特性来恢复。我们证明了具有位叶片和相叉噪声的通道之间存在巨大差异,并进一步提出了一种最大程度地恢复量子信息的方案。
A general quantum channel consisting of a decohering and a filtering element carries one qubit of an entangled photon pair. As we apply a local filter to the other qubit, some mutual quantum information between the two qubits is restored depending on the properties of the noise mixed into the signal. We demonstrate a drastic difference between channels with bit-flip and phase-flip noise and further suggest a scheme for maximal recovery of the quantum information.