3 papers
quant-ph2022
Preentangling Quantum Algorithms -- the Density Matrix Renormalization Group-assisted Quantum Canonical Transformation
Mohsin Iqbal, David Muñoz Ramo, Henrik Dreyer
We propose the use of parameter-free preentanglers as initial states for quantum algorithms. We apply this idea to the electronic structure problem, combining a quantized version o…
cond-mat.str-el2019
Detecting subsystem symmetry protected topological order via entanglement entropy
David T. Stephen, Henrik Dreyer, Mohsin Iqbal +1
Subsystem symmetry protected topological (SSPT) order is a type of quantum order that is protected by symmetries acting on lower-dimensional subsystems of the entire system. In thi…
quant-ph2018
Projected Entangled Pair States with continuous virtual symmetries
Henrik Dreyer, J. Ignacio Cirac, Norbert Schuch
We study Projected Entangled Pair States (PEPS) with continuous virtual symmetries, i.e., symmetries in the virtual degrees of freedom, through an elementary class of models with S…