Approaching the quantum limit of sub-diffraction incoherent barcode reading

Michael R. Grace, Mark A. Neifeld, Amit Ashok, Saikat Guha

Research output: Contribution to journalConference articlepeer-review


We developed a quantum-inspired adaptive algorithm using spatial-modedemultiplexing measurements to read incoherently illuminated barcodes at large distances. In simulations, our scheme accurately discriminates barcodes in 20x less time than direct imaging at a standoff of 1 km.

Original languageEnglish (US)
Article numberCF4B.1
JournalOptics InfoBase Conference Papers
StatePublished - 2021
EventComputational Optical Sensing and Imaging, COSI 2021 - Part of OSA Imaging and Applied Optics Congress 2021 - Virtual, Online, United States
Duration: Jul 19 2021Jul 23 2021

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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