542 citations · 4.4k across the 69 of their papers we have counts for
5 papers · 1 filter
Symmetric Squares of Graphs
Koenraad Audenaert, Chris Godsil, Gordon Royle +1
We consider symmetric powers of a graph. In particular, we show that the spectra of the symmetric square of strongly regular graphs with the same parameters are equal. We also prov…
A Note on the p->q norms of Completely Positive Maps
Koenraad M. R. Audenaert
King and Ruskai asked whether the norm of a completely positive map , acting between Schatten and classes of self-adjoint operators, $||Φ||_{p\to q} = \max_{A=A…
A Norm Compression Inequality for Block Partitioned Positive Semidefinite Matrices
Koenraad M. R. Audenaert
Let be a positive semidefinite matrix, block partitioned as $$ A=\twomat{B}{C}{C^*}{D}, $$ where and are square blocks. We prove the following inequalities for the Scha…
Entanglement on mixed stabiliser states--I: Normal Forms and Reduction Procedures
Koenraad M. R. Audenaert, Martin B. Plenio
The stabiliser formalism allows the efficient description of a sizeable class of pure as well as mixed quantum states of N-qubit systems. That same formalism has important applicat…
Continuity bounds on the quantum relative entropy
K. M. R. Audenaert, J. Eisert
The quantum relative entropy is frequently used as a distance, or distinguishability measure between two quantum states. In this paper we study the relation between this measure an…