论文标题
评论“如何通过相关性观察和量化量子discord状态”
Comment on "How to observe and quantify quantum-discord states via correlations"
论文作者
论文摘要
评论文章中提出的协议可以证明零不和谐；但是，它无法量化某些状态的非零分配。此外，该协议效率不如通过执行完整量子状态层析成像来计算不和谐的效率。
The protocol proposed in the commented-upon article can certify zero discord; however, it fails to quantify non-zero discord for some states. Further, the protocol is less efficient than calculating discord via performing full quantum state tomography.
