2011/02/28 by P. de Fouquieres, S. G. Schirmer, S. J. Glaser +1 · 1 citation
Physics and Astronomy · Mathematics · #quant-ph #math-ph #math.MP
paper · pdf · doi:10.1016/j.jmr.2011.07.023
published as Journal of Magnetic Resonance, 212 (2011) 412-417 · Submitted for publication
arxiv created 2011/06/23 · arxiv updated 2014/07/16
We report some improvements to the gradient ascent pulse engineering (GRAPE) algorithm for optimal control of quantum systems. These include more accurate gradients, convergence acceleration using the BFGS quasi-Newton algorithm as well as faster control derivative calculation algorithms. In all test systems, the wall clock time and the convergence rates show a considerable improvement over the approximate gradient ascent.