43 citations · 225 across the 18 of their papers we have counts for
19 papers
Quantum memory precludes mixed-unitary dynamics
Charlotte Bäcker, Konstantin Beyer, Walter T. Strunz
Unital quantum channels, defined by their property of leaving the maximally mixed state invariant, form an important class of quantum operations. A distinguished subset of these ch…
Hardware-Agnostic Modeling of Quantum Side-Channel Leakage via Conditional Dynamics and Learning from Full Correlation Data
Brennan Bell, Andreas Trügler, Konstantin Beyer +1
We study a sequential coherent side-channel model in which an adversarial probe qubit interacts with a target qubit during a hidden gate sequence. Repeating the same hidden sequenc…
A One-sided Witness for the Quantumness of Gravitational Dynamics
Konstantin Beyer, M. S. Kim, Igor Pikovski
Quantum information concepts and quantum technologies have opened the prospect to probe quantum gravity in table-top experiments. Many proposals rely on witnessing entanglement gen…
Entropic witness for quantum memory in open system dynamics
Charlotte Bäcker, Konstantin Beyer, Walter T. Strunz
The dynamics of open quantum system are often modeled by non-Markovian processes that account for memory effects arising from interactions with the environment. It is well-known th…
Operational work fluctuation theorem for open quantum systems
Konstantin Beyer, Walter T. Strunz
The classical Jarzynski equality establishes an exact relation between the stochastic work performed on a system driven out of thermal equilibrium and the free energy difference in…
Regularization of Riemannian optimization: Application to process tomography and quantum machine learning
Felix Soest, Konstantin Beyer, Walter T. Strunz
Gradient descent algorithms on Riemannian manifolds have recently been proposed as a practical tool for optimizing quantum channels. We add rank-penalizing regularization terms to…