312 citations · 774 across the 12 of their papers we have counts for
12 papers
Graph-state formalism for mutually unbiased bases
Christoph Spengler, Barbara Kraus
A pair of orthonormal bases is called mutually unbiased if all mutual overlaps between any element of one basis with an arbitrary element of the other basis coincide. In case the d…
Entanglement detection via mutually unbiased bases
Christoph Spengler, Marcus Huber, Stephen Brierley +2
We investigate correlations among complementary observables. In particular, we show how to take advantage of mutually unbiased bases (MUBs) for the efficient detection of entanglem…
Examining the dimensionality of genuine multipartite entanglement
Christoph Spengler, Marcus Huber, Andreas Gabriel +1
Entanglement in high-dimensional many-body systems plays an increasingly vital role in the foundations and applications of quantum physics. In the present paper, we introduce a the…
Composite parameterization and Haar measure for all unitary and special unitary groups
Christoph Spengler, Marcus Huber, Beatrix C. Hiesmayr
We adopt the concept of the composite parameterization of the unitary group U(d) to the special unitary group SU(d). Furthermore, we also consider the Haar measure in terms of the…
Heisenberg's Uncertainty Relation and Bell Inequalities in High Energy Physics
A. Di Domenico, A. Gabriel, B. C. Hiesmayr +7
An effective formalism is developed to handle decaying two-state systems. Herewith, observables of such systems can be described by a single operator in the Heisenberg picture. Thi…
Measure of genuine multipartite entanglement with computable lower bounds
Zhi-Hao Ma, Zhi-Hua Chen, Jing-Ling Chen +3
We introduce an intuitive measure of genuine multipartite entanglement which is based on the well-known concurrence. We show how lower bounds on this measure can be derived that al…