To use quantum systems for technological applications one first needs to preserve their
coherence for macroscopic time scales, even at finite temperature. Quantum error correction …

Device concepts in semiconductor spintronics make long spin lifetimes desirable, and the
requirements put on spin control by proposals for quantum information processing are even …

We present a family of local quantum channels whose steady states exhibit stable mixed-
state symmetry-protected topological (SPT) order. Motivated by recent experimental …

A big open question in the quantum information theory concerns the feasibility of a self-
correcting quantum memory. A quantum state recorded in such memory can be stored …

We derive Markovian master equations for single and interacting harmonic systems in
different scenarios, including strong internal coupling. By comparing the dynamics resulting …

We classify different ways to passively protect classical and quantum information, ie, we do
not allow for syndrome measurements, in the context of local Lindblad models for spin …

We give a broad generalisation of the map**, originally due to Dennis, Kitaev, Landahl,
and Preskill, from quantum error correcting codes to statistical mechanical models. We show …

Storing quantum information for long times without disruptions is a major requirement for
most quantum information technologies. A very appealing approach is to use self-correcting …

We theoretically study noncoplanar spin textures in polar magnetic conductors. Starting from
the Kondo lattice model with the Rashba spin-orbit coupling, we derive an effective spin …

We theoretically obtain the phase diagram of localized magnetic impurity spins arranged in
a one-dimensional chain on top of a one-or two-dimensional electron gas. The interactions …