77 citations · 217 across the 5 of their papers we have counts for
5 papers
Improving the purity of one- and two-qubit gates by AC fields
Sigmund Kohler, Peter Hänggi
We investigate the influence of AC driving fields on the coherence properties of one- and two-qubit gate operations. In both cases, we find that for suitable driving parameters, th…
Landau-Zener transitions in qubits controlled by electromagnetic fields
Martijn Wubs, Keiji Saito, Sigmund Kohler +2
We investigate the influence of a dipole interaction with a classical radiation field on a qubit during a continuous change of a control parameter. In particular, we explore the no…
Intrinsic phonon decoherence and quantum gates in coupled lateral quantum dot charge qubits
Markus J. Storcz, Udo Hartmann, Sigmund Kohler +1
Recent experiments by Hayashi et al. [Phys. Rev. Lett. 91, 226804 (2003)] demonstrate coherent oscillations of a charge quantum bit (qubit) in laterally defined quantum dots. We st…
Coherent charge transport through molecular wires: influence of strong Coulomb repulsion
Franz J. Kaiser, Michael Strass, Sigmund Kohler +1
We derive a master equation for the electron transport through molecular wires in the limit of strong Coulomb repulsion. This approach is applied to two typical situations: First,…
Nonadiabatic Electron Pumping: Maximal Current with Minimal Noise
Michael Strass, Peter Hänggi, Sigmund Kohler
The noise properties of pump currents through an open double quantum dot setup with non-adiabatic ac driving are investigated. Driving frequencies close to the internal resonances…