可擦和不可擦相关性
Erasable and unerasable correlations
摘要：
我们解决的问题，消除相关性的状态集，同时保留尽可能多的本地量子信息。我们证明，从普遍克隆获得的状态只能是去相关的本地信息（即信息复制状态）的完全擦除的代价。我们解析地解决了两个量子比特和两个量子模（高斯态的谐振子）的去相关问题，并提供了一组可去相关的状态和要添加去相关的最小噪声量。
英文摘要：
We address the problem of removing correlation from sets of states while preserving as much local quantum information as possible. We prove that states obtained from universal cloning can only be decorrelated at the expense of complete erasure of local information (i.e. information about the copied state). We solve analytically the problem of decorrelation for two qubits and two qumodes (harmonic oscillators in Gaussian states), and provide sets of decorrelable states and the minimum amount of noise to be added for decorrelation.
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。
