59 citations · 110 across the 7 of their papers we have counts for
7 papers
Moment Optimization in the Navascués-Pironio-Acín Hierarchy
Francesco Flora, Losel Matos, Tim Heightman +3
The Navascués-Pironio-Acín (NPA) hierarchy provides a convergent sequence of semidefinite programming (SDP) relaxations for noncommutative polynomial optimisation, ubiquitous in qu…
Post-quantum nonlocality in the minimal triangle scenario
Alejandro Pozas-Kerstjens, Antoine Girardin, Tamás Kriváchy +2
We investigate network nonlocality in the triangle scenario when all three parties have no input and binary outputs. Through an explicit example, we prove that this minimal scenari…
Proposal for spin squeezing in rare-earth ion-doped crystals with a four-color scheme
Tamás Kriváchy, Krzysztof T. Kaczmarek, Mikael Afzelius +2
Achieving spin squeezing within solid-state devices is a long standing research goal, due to the promise of their particularities, for instance their long coherence times, the poss…
Building separable approximations for quantum states via neural networks
Antoine Girardin, Nicolas Brunner, Tamás Kriváchy
Finding the closest separable state to a given target state is a notoriously difficult task, even more difficult than deciding whether a state is entangled or separable. To tackle…
Fast semidefinite programming with feedforward neural networks
Tamás Kriváchy, Yu Cai, Joseph Bowles +2
Semidefinite programming is an important optimization task, often used in time-sensitive applications. Though they are solvable in polynomial time, in practice they can be too slow…
Tight steering inequalities from generalized entropic uncertainty relations
Tamás Kriváchy, Florian Fröwis, Nicolas Brunner
We establish a general connection between entropic uncertainty relations, Einstein-Podolsky-Rosen steering, and joint measurability. Specifically, we construct steering inequalitie…
Josephson radiation and shot noise of a semiconductor nanowire junction
David J. van Woerkom, Alex Proutski, Ruben J. J. van Gulik +6
We measured the Josephson radiation emitted by an InSb semiconductor nanowire junction utilizing photon assisted quasiparticle tunneling in an AC-coupled superconducting tunnel jun…