121 citations · 182 across the 8 of their papers we have counts for
8 papers
Entropic distinguishability of quantum fields in phase space
Sara Ditsch, Tobias Haas
We present a general way of quantifying the entropic uncertainty of quantum field configurations in phase space in terms of entropic distinguishability with respect to the vacuum.…
Accessing continuous-variable entanglement witnesses with multimode spin observables
Célia Griffet, Tobias Haas, Nicolas J. Cerf
We present several measurement schemes for accessing separability criteria for continuous-variable bipartite quantum systems. Starting from moments of the bosonic mode operators, c…
Optimizing detection of continuous variable entanglement for limited data
Martin Gärttner, Tobias Haas, Johannes Noll
We explore the advantages of a class of entanglement criteria for continuous variable systems based on the Husimi -distribution in scenarios with sparse experimental data. The g…
Detecting continuous variable entanglement in phase space with the -distribution
Martin Gärttner, Tobias Haas, Johannes Noll
We prove a general class of continuous variable entanglement criteria based on the Husimi -distribution, which represents a quantum state in canonical phase space, by employing…
General class of continuous variable entanglement criteria
Martin Gärttner, Tobias Haas, Johannes Noll
We present a general class of entanglement criteria for continuous variable systems. Our criteria are based on the Husimi -distribution and allow for optimization over the set o…
Curved and expanding spacetime geometries in Bose-Einstein condensates
Mireia Tolosa-Simeón, Álvaro Parra-López, Natalia Sánchez-Kuntz +9
Phonons have the characteristic linear dispersion relation of massless relativistic particles. They arise as low energy excitations of Bose-Einstein condensates and, in nonhomogene…
Scalar quantum fields in cosmologies with 2+1 spacetime dimensions
Natalia Sánchez-Kuntz, Álvaro Parra-López, Mireia Tolosa-Simeón +2
Motivated by the possibility to use Bose-Einstein condensates as quantum simulators for spacetime curvature, we study a massless relativistic scalar quantum field in spatially curv…
Quantum field simulator for dynamics in curved spacetime
Celia Viermann, Marius Sparn, Nikolas Liebster +9
The observed large-scale structure in our Universe is seen as a result of quantum fluctuations amplified by spacetime evolution. This, and related problems in cosmology, asks for a…