7 papers
Quantum speedup from nonclassical polarization
Tim AÃbrock, Jan Sperling, Laura Ares
We develop a framework for identifying nonclassical speedups in systems with polarization, likewise spin degrees of freedom. By confining the dynamics to the manifold of angular mo…
The entangling power of non-entangling channels
Julien Pinske, Jan Sperling, Klaus Mølmer
There are processes that cannot generate entanglement but may, nevertheless, amplify entanglement already present in a system. Here, we show that a non-entangling operation can inc…
Multipartite entanglement dynamics in quantum walks
Emil K. F. Donkersloot, René Sondenheimer, Jan Sperling
Quantum walks constitute a rich area of quantum information science, where multipartite entanglement plays a central role in the dynamics and scalability of quantum advantage over…
Quantifying entanglement in quantum thermodynamics via separability constraints
Joan Alba, Laura Ares, Jan Sperling +1
The role of quantum entanglement in thermodynamical systems remains elusive. Does entanglement result in thermodynamic advantages or does it impose fundamental limitations? Here, w…
Separability Lindblad equation for dynamical open-system entanglement
Julien Pinske, Laura Ares, Benjamin Hinrichs +2
Providing entanglement for the design of quantum technologies in the presence of noise constitutes today's main challenge in quantum information science. A framework is required th…
Restricted Monte Carlo wave function method and Lindblad equation for identifying entangling open-quantum-system dynamics
Laura Ares, Julien Pinske, Benjamin Hinrichs +2
We develop an extension of the Monte Carlo wave function approach that unambiguously identifies dynamical entanglement in general composite, open systems. Our algorithm performs ta…