Abstract
Ghost imaging and diffraction, inspired by the Hanbury Brown and Twiss effect,
have potential in both classical and quantum optics regimes on account of their nonlocal
characteristics and subwavelength resolution capability, and therefore have aroused
particular interest. By extending the correspondence imaging scheme, we utilize the
positive and negative intensity correlations in diffraction and perform subwavelength
diffraction with pseudo-thermal light. In the experiment, a subwavelength (λ/2)
resolution and a better signal-to-noise ratio (10.3% improvement) are simultaneously
achieved. The scheme can be utilized as a complement to the existing ghost imaging
scheme to improve image quality.
© 2016 Chinese Laser Press
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