303 citations · 4.6k across the 110 of their papers we have counts for
3 papers · 2 filters
Local response of topological order to an external perturbation
Alioscia Hamma, Lukasz Cincio, Siddhartha Santra +2
We study the behavior of the Rényi entropies for the toric code subject to a variety of different perturbations, by means of 2D density matrix renormalization group and analytical…
Probing topological order with Rényi entropy
Gábor B. Halász, Alioscia Hamma
We present an analytical study of the quantum phase transition between the topologically ordered toric-code-model ground state and the disordered spin-polarized state. The phase tr…
Ensembles of physical states and random quantum circuits on graphs
Alioscia Hamma, Siddhartha Santra, Paolo Zanardi
In this paper we continue and extend the investigations of the ensembles of random physical states introduced in A. Hamma et al. [ http://prl.aps.org/abstract/PRL/v109/i4/e040502 P…