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Harvesting Entanglement from the Black Hole Vacuum
Laura J. Henderson, Robie A. Hennigar, Robert B. Mann +2
We implement the entanglement harvesting protocol, in which two Unruh-DeWitt detectors become entangled through local interactions with a quantum field, for the first time in the v…
A classification of open Gaussian dynamics
Daniel Grimmer, Eric Brown, Achim Kempf +2
We introduce a classification scheme for the generators of bosonic open Gaussian dynamics, providing instructive diagrams description for each type of dynamics. Using this classifi…
Taming an Optical Schroedinger's cat - A quantum non-demolition approach
Marvellous Onuma-Kalu, Kae Nemoto, W. J. Munro +1
An interferometric experiment is described that characterizes an optical cat state in a cavity mode. Our method describes how to measure the amplitude and phase of the different co…
Over the horizon: distinguishing the Schwarzschild spacetime and the spacetime using an Unruh-DeWitt detector
Keith K. Ng, Robert B. Mann, Eduardo Martin-Martinez
We show that a particle detector can distinguish the geon from the Schwarzschild black hole, even though they differ only by a topological identification beyond the…
Entanglement harvesting and divergences in quadratic Unruh-DeWitt detectors pairs
Allison Sachs, Robert B. Mann, Eduardo Martin-Martinez
We analyze correlations between pairs of particle detectors quadratically coupled to a real scalar field. We find that, while a single quadratically coupled detector presents no di…
Sufficient condition for nonexistence of symmetric extension of qudits using Bell inequalities
Meenu Kumari, Shohini Ghose, Robert B. Mann
We analyze the connection between Bell inequality violations and symmetric extendibility of quantum states. We prove that 2-qubit reduced states of multiqubit symmetric pure states…