Abstract:

A quantum register or quantum memory loses information over time due to decoherence -- unwanted interaction with the environment. Dynamical decoupling is a method to counterfeit this phenomenon, and some versions of it will be introduced in this talk. The focus is then on placing dynamical decoupling in a mathematical framework and on developing an analytical-probabilistic model. The latter shall be used to make interesting predictions on the quantum register and, more generally, on certain alternative quantum theories.