The protocol proposed in the commented article can certify zero discord, however, it fails to non-zero discord for some states. Further, the protocol is less efficient than calculating discord via performing full quantum state tomography.

中文翻译：

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评论“如何通过相关性观察和量化量子失调态”

评论文章中提出的协议可以证明零不和谐，但是，对于某些状态，它不能使非零不和谐。此外，该协议的效率不如通过执行完整的量子状态层析成像来计算不一致。