Steffen J. Glaser

TL;DR: In this paper, a five-bit nuclear-magnetic resonance quantum computer is presented, which distinguishes among various functions on four bits, making use of quantum parallelism, based on the recognition of the sufficiency of linear coupling along a chain of nuclear spins.

TL;DR: In this article, the authors apply optimal control techniques to an inhomogeneous spin ensemble coupled to a cavity and numerically show the extent to which optimal control fields robust against system uncertainties help enhance the sensitivity of the detection process.

TL;DR: In this paper, a new HSQC-type pulse scheme is introduced that effectively improves the spectral resolution by what corresponds to the size of geminal J HH coupling constants, i.e., on the order of −14 Hz in CH 2 groups of peptides and proteins.

TL;DR: In this paper, the authors derive analytical expressions for the control fields and the dynamics of an ensemble of springs with different frequencies, and compare three different methods of control: adiabatic, shortcut to adiabiaticity, and optimal processes.

TL;DR: In this paper, the effect of restricted control of unitary quantum evolution is investigated with specific attention to NMR spectroscopy, and it is demonstrated that in cases where the Hamiltonian through commutation fails to span the entire Lie algebra su(n) for an n-level quantum system, the maximum transfer efficiency may be reduced significantly relative to previously known unitary bounds on spin dynamics.