A crucial subroutine for various quantum computing and communication algorithms is to
efficiently extract different classical properties of quantum states. In a notable recent …

Topological order offers possibilities for processing quantum information that can be
immune to imperfections. However, the question of its stability out of equilibrium is relevant …

We study a Hamiltonian system describing a three-spin-1/2 clusterlike interaction competing
with an Ising-like antiferromagnetic interaction. We compute free energy, spin-correlation …

We study a cluster Ising model with non-Hermitian external field which can be exactly solved
in the language of free fermions. By investigating the second derivative of energy density …

We study a Hamiltonian system describing a three–spin-1/2 cluster-like interaction
competing with an Ising-like exchange. We show that the ground state in the cluster phase …

Efficient sampling from a classical Gibbs distribution is an important computational problem
with applications ranging from statistical physics over Monte Carlo and optimization …

We demonstrate how to construct the Z 2× Z 2 global symmetry which protects the ground
state degeneracy of cluster states for open boundary conditions. Such a degeneracy …

We investigate entanglement naturally present in the 1D topologically ordered phase
protected with the on-site symmetry group of an octahedron as a potential resource for …

We constrain a broad class of teleportation protocols using insights from locality. In
the``standard''teleportation protocols we consider, all outcome-dependent unitaries are …

Drawing independent samples from a probability distribution is an important computational
problem with applications in Monte Carlo algorithms, machine learning, and statistical …