8 papers · 1 filter
Quantum Darwinism and the quality of Petz recovery
Juha Torvinen, Esko Keski-Vakkuri, Nicola Pranzini
According to Quantum Darwinism, system-environment interactions both einselect particular system properties and encode them redundantly in many independent subsets of the environme…
Induced Resource Theories and Harvesting via Quantum Probes
Ron Nyström, Simone Cepollaro, Nicola Pranzini +3
We consider scenarios in which a quantum system with a well-defined resource theory is used as a probe to interact with an environment, such as a quantum field, for which a resourc…
Bipartite entanglement harvesting with multiple detectors
Santeri Salomaa, Esko Keski-Vakkuri, Sergi Nadal-Gisbert
We study bipartite entanglement harvesting from the quantum vacuum of a massless scalar field between two subsystems, each composed of a finite number of Unruh-DeWitt detectors. Us…
Continuous majorization in quantum phase space for Wigner-positive states and proposals for Wigner-negative states
Jan de Boer, Giuseppe Di Giulio, Esko Keski-Vakkuri +1
In quantum resource theory, one is often interested in identifying which states serve as the best resources for particular quantum tasks. If a relative comparison between quantum s…
Optimizing quantum measurements by partitioning multisets of observables
Otto Veltheim, Esko Keski-Vakkuri
Quantum tomography approaches typically consider a set of observables which we wish to measure, design a measurement scheme which measures each of the observables and then repeats…
Harvesting magic from the vacuum
Ron Nyström, Nicola Pranzini, Esko Keski-Vakkuri
Magic is the quantum resource allowing a quantum computer to perform operations that cannot be simulated efficiently by classical computation. As such, generating magic in a quantu…