发表机构
Palacký University（帕拉茨基大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文评论指出，Qin等人和Nielsen等人基于压缩真空相位传感声称的无条件量子计量优势，其证据（每次试验或每个探测光子的QFI）未计入构建估计器的总资源，统计上不合理，故在一致资源核算下该优势不成立。
AI 中文摘要
Qin等人[1]和Nielsen等人[2]的论文报告了基于压缩真空相位传感的无条件量子计量优势。这一主张的主要证据是每次试验或每个探测光子评估的量子Fisher信息（QFI），随后将其解释为计量性能的度量。这种解释在统计上是不合理的，因为它没有考虑构建估计器所需的总实验资源。因此，当进行一致的资源核算时，所报告的方案并不提供相对于经典相位传感策略的无条件计量优势。
英文摘要
The papers by Qin et al. [1] and Nielsen et al. [2] report an unconditional quantum metrological advantage based on squeezed-vacuum phase sensing. The principal evidence for this claim is the Quantum Fisher Information (QFI) evaluated per trial or per detected photon, which is subsequently interpreted as a measure of metrological performance. This interpretation is statistically unjustified because it does not account for the total experimental resources required to construct an estimator. Consequently, the reported protocols do not provide an unconditional metrological advantage over classical phase-sensing strategies when resource accounting is performed consistently.
CommentsComment on arXiv:2302.00940 and arXiv:2111.09756
