Abstract

Single-pixel imaging (SPI) is a novel lens-free imaging method quite different from the conventional spatially resolved imaging, yet it suffers the Rayleigh resolution limit imposed by the illumination aperture. Here we show that the Rayleigh resolution limit in SPI can be overcome by employing optical fluctuation. With Nth-order autocorrelation of the signal measured by the bucket detector in SPI, the imaging resolution can surpass the Rayleigh resolution limit by a factor of N. This result is important for optical microscopy based on SPI.

© 2019 Optical Society of America

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