5 papers
Engineering interactions by collective coupling of atom pairs to cavity photons for entanglement generation
Sankalp Sharma, Jan ChwedeÅczuk, Tomasz Wasak
Engineering atom-atom interactions is essential both for controlling novel phases of matter and for efficient preparation of many-body entangled states, which are key resources in…
Inherent quantum resources in stationary spin chains
Marcin PÅodzieÅ, Jan ChwedeÅczuk, Maciej Lewenstein
The standard way to generate many-body quantum correlations is via a dynamical protocol: an initial product state is transformed by interactions that generate non-classical correla…
Entanglement classification and \emph{non-k}-separability certification via Greenberger-Horne-Zeilinger-class fidelity
Marcin PÅodzieÅ, Jan ChwedeÅczuk, Maciej Lewenstein +1
Many-body quantum systems can be characterised using the notions of \emph{k}-separability and entanglement depth. A quantum state is \emph{k}-separable if it can be expressed as a…
Limits to velocity of signal propagation in many-body systems: a quantum-information perspective
Piotr Wysocki, Jan ChwedeÅczuk
The Lieb-Robinson bound (LRB) states that the range and strength of interactions between the constituents of a complex many-body system impose upper limits to how fast the signal c…
Bell correlations of a thermal fully-connected spin chain in a vicinity of a quantum critical point
Danish Ali Hamza, Jan ChwedeÅczuk
Bell correlations are among the most exotic phenomena through which quantum mechanics manifests itself. Their presence signals that the system can violate the postulates of local r…