152 citations · 959 across the 25 of their papers we have counts for
4 papers · 2 filters
On quantum additive Gaussian noise channels
Martin Idel, Robert Koenig
We give necessary and sufficient conditions for a Gaussian quantum channel to have a dilation involving a passive, i.e., number-preserving unitary. We then establish a normal form…
Geometric inequalities from phase space translations
Stefan Huber, Robert Koenig, Anna Vershynina
We establish a quantum version of the classical isoperimetric inequality relating the Fisher information and the entropy power of a quantum state. The key tool is a Fisher informat…
Preparing topologically ordered states by Hamiltonian interpolation
Xiaotong Ni, Fernando Pastawski, Beni Yoshida +1
We study the preparation of topologically ordered states by interpolating between an initial Hamiltonian with a unique product ground state and a Hamiltonian with a topologically d…
Matrix product approximations to multipoint functions in two-dimensional conformal field theory
Robert Koenig, Volkher B. Scholz
Matrix product states (MPS) illustrate the suitability of tensor networks for the description of interacting many-body systems: ground states of gapped -D systems are approximab…