Fate of the cluster state on the square lattice in a magnetic field

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Kalis H, Klagges D, Orus R, Schmidt KP
Zeitschrift: Physical Review A
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2012
Band: 86
Heftnummer: 2
ISSN: 1050-2947


Abstract


The cluster state represents a highly entangled state which is one central object for measurement-based quantum computing. Here we study the robustness of the cluster state on the two-dimensional square lattice at zero temperature in the presence of external magnetic fields by means of different types of high-order series expansions and variational techniques using infinite projected entangled pair states. The phase diagram displays a first-order phase transition line ending in two critical end points. Furthermore, it contains a characteristic self-dual line in parameter space allowing many precise statements. The self-duality is shown to exist on any lattice topology.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Schmidt, Kai Phillip Prof. Dr.
Professur für Theoretische Physik


Einrichtungen weiterer Autorinnen und Autoren

Max-Planck-Institute of Quantum Optics (MPQ) / Max-Planck-Institut für Quantenoptik
Technische Universität Dortmund


Zitierweisen

APA:
Kalis, H., Klagges, D., Orus, R., & Schmidt, K.P. (2012). Fate of the cluster state on the square lattice in a magnetic field. Physical Review A, 86(2). https://dx.doi.org/10.1103/PhysRevA.86.022317

MLA:
Kalis, Henning, et al. "Fate of the cluster state on the square lattice in a magnetic field." Physical Review A 86.2 (2012).

BibTeX: 

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