Experimental demonstration of quantum-inspired optical symmetric hypothesis testing

S. A. Wadood, K. R. Sethuraj, Kevin Liang, Michael R. Grace, Gavin La Rue, Saikat Guha, A. N. Vamivakas

Research output: Contribution to journalLetterpeer-review


We use a phase-sensitive measurement to perform a binary hypothesis testing, i.e., distinguish between one on-axis and two symmetrically displaced Gaussian point spread functions. In the sub-Rayleigh regime, we measure a total error rate lower than allowed by direct imaging. Our results experimentally demonstrate that linear-optical spatial mode transformations can provide useful advantages for object detection compared with conventional measurements, even in the presence of realistic experimental cross talk, paving the way for meaningful improvements in identifying, detecting, and monitoring real-world, diffraction-limited scenes.

Original languageEnglish (US)
Pages (from-to)750-753
Number of pages4
JournalOptics letters
Issue number3
StatePublished - Feb 2024

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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