Maximizing the information gain of a single ion microscope using bayes   experimental design
  We show nanoscopic transmission microscopy, using a deterministic single particle source and compare the resulting images in terms of signal-to-noise ratio, with those of conventional Poissonian sources. Our source is realized by deterministic extraction of laser-cooled calcium ions from a Paul trap. Gating by the extraction event allows for the suppression of detector dark counts by six orders of magnitude. Using the Bayes experimental design method, the deterministic characteristics of this source are harnessed to maximize information gain, when imaging structures with a parametrizable transmission function. We demonstrate such optimized imaging by determining parameter values of one and two dimensional transmissive structures. 
Georg Jacob, Karin Groot-Berning, Ulrich G. Poschinger, Ferdinand   Schmidt-Kaler and Kilian Singer
quant-ph