Haidong Yuan

Time optimal control of spin systems
(Wednesday, 27 August, 1:30-2:15)

Abstract:

Experiments in coherent nuclear and electron magnetic resonance, and optical spectroscopy correspond to control of quantum mechanical ensembles, guiding them from initial to final target states by unitary transformations. The control inputs (pulse sequences) that accomplish these unitary transformations should take as little time as possible so as to minimize the effects of relaxation and decoherence and to optimize the sensitivity of the experiments. Here I present time optimal syntheses of two- and three-spin quantum gates on spin systems. We show a significant saving of time over conventional methods.