4 papers · 1 filter
Entanglement dualities in supersymmetry
Robert H. Jonsson, Lucas Hackl, Krishanu Roychowdhury
We derive a general relation between the bosonic and fermionic entanglement in the ground states of supersymmetric quadratic Hamiltonians. For this, we construct canonical identifi…
A comparison between quantum and classical noise radar sources
Robert Jonsson, Roberto Di Candia, Martin Ankel +2
We compare the performance of a quantum radar based on two-mode squeezed states with a classical radar system based on correlated thermal noise. With a constraint of equal number o…
Communication through quantum fields near a black hole
Robert H. Jonsson, David Q. Aruquipa, Marc Casals +2
We study the quantum channel between two localized first-quantized systems that communicate in 3+1 dimensional Schwarzschild spacetime via a quantum field. We analyze the informati…
Minimal energy cost of entanglement extraction
Lucas Hackl, Robert H. Jonsson
We compute the minimal energy cost for extracting entanglement from the ground state of a bosonic or fermionic quadratic system. Specifically, we find the minimal energy increase $…