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Quantum Chaos, Delocalization, and Entanglement in Disordered Heisenberg Models
Winton G. Brown, Lea F. Santos, David J. Starling +1
We investigate disordered one- and two-dimensional Heisenberg spin lattices across a transition from integrability to quantum chaos from both a statistical many-body and a quantum-…
The structure of preserved information in quantum processes
Robin Blume-Kohout, Hui Khoon Ng, David Poulin +1
We introduce a general operational characterization of information-preserving structures (IPS) -- encompassing noiseless subsystems, decoherence-free subspaces, pointer bases, and…
Quantum Markovian Subsystems: Invariance, Attractivity, and Control
Francesco Ticozzi, Lorenza Viola
We characterize the dynamical behavior of continuous-time, Markovian quantum systems with respect to a subsystem of interest. Markovian dynamics describes a wide class of open quan…
Generalized entanglement as a framework for complex quantum systems: Purity vs delocalization measures
Lorenza Viola, Winton G. Brown
We establish contact between the delocalization properties of pure quantum states, as quantified by their number of principal components, and the average generalized entanglement p…