4 papers
Computational power of matchgates with supplementary resources
Martin Hebenstreit, Richard Jozsa, Barbara Kraus +1
We study the classical simulation complexity in both the weak and strong senses, of matchgate (MG) computations supplemented with all combinations of settings involving inclusion o…
A link between symmetries of critical states and the structure of SLOCC classes in multipartite systems
Oskar Słowik, Martin Hebenstreit, Barbara Kraus +1
Central in entanglement theory is the characterization of local transformations among pure multipartite states. As a first step towards such a characterization, one needs to identi…
Measurement outcomes that do not occur and their role in entanglement transformations
Martin Hebenstreit, Matthias Englbrecht, Cornelia Spee +2
The characterization of transformations among entangled pure states via local operations assisted by classical communication (LOCC) is a crucial problem in quantum information theo…
All pure fermionic non-Gaussian states are magic states for matchgate computations
Martin Hebenstreit, Richard Jozsa, Barbara Kraus +2
Magic states were introduced in the context of Clifford circuits as a resource that elevates classically simulatable computations to quantum universal capability, while maintaining…