Comment on "Quantum Limits to Incoherent Imaging are Achieved by Linear Interferometry"

Quantum Physics [Submitted on 22 Apr 2026] Comment on "Quantum Limits to Incoherent Imaging are Achieved by Linear Interferometry" George Brumpton, Aiman Khan, Helia Hooshmand, Samanta Piano, Gerardo Adesso We show that the construction of the linear interferometer in the Supplemental Material of arXiv:1909.09581 is flawed, leading to a generally suboptimal solution. We then provide the correct derivation of the optimal interferometric configuration that achieves the quantum Fisher information limit for imaging N weak incoherent emitters. Comments: 1 page, 1 figure Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.20353 [quant-ph]   (or arXiv:2604.20353v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.20353 Focus to learn more Submission history From: Gerardo Adesso [view email] [v1] Wed, 22 Apr 2026 08:56:07 UTC (99 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)