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Wigner negativity in spin- systems
Jack Davis, Meenu Kumari, Robert B. Mann +1
The nonclassicality of simple spin systems as measured by Wigner negativity is studied on a spherical phase space. Several SU(2)-covariant states with common qubit representations…
Harvesting correlations in Schwarzschild and collapsing shell spacetimes
Erickson Tjoa, Robert B. Mann
We study the harvesting of correlations by two Unruh-DeWitt static detectors from the vacuum state of a massless scalar field in a background Vaidya spacetime consisting of a colla…
Thermality, causality and the quantum-controlled Unruh-deWitt detector
Joshua Foo, Sho Onoe, Robert B. Mann +1
Particle detector models such as the Unruh-deWitt detector are widely used in relativistic quantum information and field theory to probe the global features of spacetime and quantu…
Quantum Temporal Superposition: the case of QFT
Laura J. Henderson, Alessio Belenchia, Esteban Castro-Ruiz +4
Quantum field theory is completely characterized by the field correlations between spacetime points. In turn, some of these can be accessed by locally coupling to the field simple…