Origin of biased noise in one-time readout temporal single pixel imaging

Abstract

One-time readout temporal ghost imaging is a viable time-analog of single pixel imaging using a sluggish light receiver haunted by memory effects, which can be utilized to eliminate the need for steady watch and as such save computer clocks for data capturing and processing. Although the as-retrieved ghost image of a temporal object is modulated in proportion to the time-reversed impulse response function of the light receiver, it can be easily corrected by division. Nevertheless, inhomogeneously distributed noise plagues the images wildly, depending on the transmittance profile of an intensity-only object, which puzzles us. A coherent explanation is attempted for such apparently inconsistent behavior of the biased noise that develops even in simulation.