3 papers
quant-ph2020
Enhanced noise resilience of the surface-GKP code via designed bias
Lisa Hänggli, Margret Heinze, Robert Koenig
We study the code obtained by concatenating the standard single-mode Gottesman-Kitaev-Preskill (GKP) code with the surface code. We show that the noise tolerance of this surface-GK…
quant-ph2018
Controllability of the Jaynes-Cummings-Hubbard model
Margret Heinze, Michael Keyl
In quantum control theory, the fundamental issue of controllability covers the questions whether and under which conditions a system can be steered from one pure state into another…
quant-ph2018
Universal Uhrig dynamical decoupling for bosonic systems
Margret Heinze, Robert Koenig
We construct efficient deterministic dynamical decoupling schemes protecting continuous variable degrees of freedom. Our schemes target decoherence induced by quadratic system-bath…