2
talks
0
committee roles
0
leadership roles
2023–2025
years active
Contributions
QIP QCrypt TQC presenter award · △program ◇steering ○organising □local · filled = chair
Talks
| Title | Conference | Type | Co-authors |
|---|---|---|---|
| No quantum advantage without classical communication: fundamental limitations of quantum networks | TQC 2025 | regular | Justus Neumann, Tulja Varun Kondra, Kiara Hansenne, Lisa T. Weinbrenner, Hermann Kampermann, Otfried Gühne, Dagmar Bruß |
|
Refuting spectral compatibility of quantum marginals ↗
|
TQC 2023 | regular | ▸Felix Huber |
The spectral variant of the quantum marginal problem asks: Given prescribed spectra for a set of quantum marginals, does there exist a compatible joint state? The main idea of this work is a symmetry-reduced semidefinite programming hierarchy for detecting incompatible spectra. The hierarchy is complete, in the sense that it detects every incompatible set of spectra. The refutations it provides are dimension-free, certifying incompatibility in all local dimensions. The hierarchy equally applies to the sums of Hermitian matrices problem, to optimize trace polynomials on the positive cone, to the compatibility of invariants, and to certify vanishing Kronecker coefficients. |
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Collaborators
| Co-author | Joint talks |
|---|---|
| Dagmar Bruß | 1 |
| Felix Huber | 1 |
| Hermann Kampermann | 1 |
| Justus Neumann | 1 |
| Kiara Hansenne | 1 |
| Lisa T. Weinbrenner | 1 |
| Otfried Gühne | 1 |
| Tulja Varun Kondra | 1 |