5 papers
Holographic quantum codes with trapped ions
Alex Steiner, Gerard Anglès Munné, Robert Freund +9
Holography is a central concept at the intersection of gravity, condensed matter theory, and quantum information, linking the interior bulk of a system to its boundary. A model rea…
Refuting spectral compatibility of quantum marginals
Felix Huber, Nikolai Wyderka
The spectral variant of the quantum marginal problem asks: Given prescribed spectra for a set of overlapping quantum marginals, does there exist a compatible joint state? The main…
Engineering holography with stabilizer graph codes
Gerard Anglès Munné, Valentin Kasper, Felix Huber
The discovery of holographic codes established a surprising connection between quantum error correction and the anti-de Sitter-conformal field theory correspondence. Recent technol…
Positive maps from the walled Brauer algebra
Maria Balanzó-Juandó, MichaÅ StudziÅski, Felix Huber
We present positive maps and matrix inequalities for variables from the positive cone. These inequalities contain partial transpose and reshuffling operations, and can be understoo…
Entanglement detection with trace polynomials
Albert Rico, Felix Huber
We provide a systematic method for nonlinear entanglement detection based on trace polynomial inequalities. In particular, this allows to employ multi-partite witnesses for the det…