title: Highly uniform holographic microtrap arrays for single atom trapping using a feedback optimization of in-trap fluorescence measurements.
abstract: We report on the novel optimization method to realize highly uniform microtrap arrays for single atom trapping with a spatial light modulator (SLM). This method consists of two iterative feedback loops with the measurements of both diffracted light intensities and in-trap fluorescence intensities from each microtrap. By applying this method to the single87Rb atom trapping, we can reduce the variance of trap depths from 20.8% to 1.7% for 4 × 4 square arrays and less than 4% for various arrays with up to 62 sites. The detection error of individual single atoms is also reduced from 1.7% to 0.0054% on average.
authors.forename: Hikaru
authors.initials: H
authors.lastname: Tamura
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Unakami
authors.forename: Jun
authors.initials: J
authors.lastname: He
authors.forename: Yoko
authors.initials: Y
authors.lastname: Miyamoto
authors.forename: Ken'ichi
authors.initials: K
authors.lastname: Nakagawa