2 papers
quant-ph2019
Obstacles to State Preparation and Variational Optimization from Symmetry Protection
Sergey Bravyi, Alexander Kliesch, Robert Koenig +1
Local Hamiltonians with topological quantum order exhibit highly entangled ground states that cannot be prepared by shallow quantum circuits. Here, we show that this property may e…
quant-ph2018
Continuum limits of homogeneous binary trees and the Thompson group
Alexander Kliesch, Robert Koenig
Tree tensor network descriptions of critical quantum spin chains are empirically known to reproduce correlation functions matching CFT predictions in the continuum limit. It is nat…