Joseph, Linta - Dartmouth College

Decoupling dipolar interactions in dense spin ensembles

Hamiltonian engineering techniques can be used to engineer certain classes of desired Hamiltonians various systems. In solid-state nuclear spin ensembles, such techniques help design pulse sequences that effectively decouple the strong magnetic dipolar interactions that dominate the system Hamiltonian. Although these decoupling sequences were originally designed to narrow spectral lines and improve resolution in NMR spectroscopy, the effective extension of coherence times achieved is also important for quantum control, simulation and sensing applications. In this work, we study the decoupling efficiency of a number of dipolar decoupling sequences with a focus on their sensitivity to experimental imperfections and other possible errors.