  In this contribution, we explore the imaging limits of terahertz single-pixel
cameras and present a way to improve the achievable signal-to-noise ratio and
spatial resolution using a technique called dithering masks. The proposed
procedure is implemented on the hardware level using recent advances in the
development of spatial light modulators for terahertz single-pixel cameras.
Thereby, our approach offers new ways to overcome theoretical imaging limits of
near wavelength resolution. We suggest that in using dithering masks the
required phase retrieval driven recovery can be simplified to a robust
non-negative linear model even for near wavelength terahertz single-pixel
imaging.
