Second order phase dispersion by optimised rotation pulses
arXiv:1904.09452 · doi:10.1103/PhysRevResearch.2.033157
Abstract
We show that the duration of broadband universal control pulses can be halved by choosing control targets with a quadratic function of phase dispersion. This class of control pulses perform a broadband universal rotation around an axis, in the Bloch sphere representation of two-level systems, given by this phase dispersion function. We present an effective optimal control method to avoid the problem of convergence to local extrema traps.
8 pages, 4 figures