Open access
Autor(in)
Alle anzeigen
Datum
2012Typ
- Journal Article
ETH Bibliographie
yes
Altmetrics
Abstract
The inevitable presence of decoherence effects in systems suitable for quantum computation necessitates effective error-correction schemes to protect information from noise. We compute the stability of the toric code to depolarization by mapping the quantum problem onto a classical disordered eight-vertex Ising model. By studying the stability of the related ferromagnetic phase via both large-scale Monte Carlo simulations and the duality method, we are able to demonstrate an increased error threshold of 18.9(3)% when noise correlations are taken into account. Remarkably, this result agrees within error bars with the result for a different class of codes—topological color codes—where the mapping yields interesting new types of interacting eight-vertex models. Mehr anzeigen
Persistenter Link
https://doi.org/10.3929/ethz-b-000058359Publikationsstatus
publishedExterne Links
Zeitschrift / Serie
Physical Review XBand
Seiten / Artikelnummer
Verlag
American Physical SocietyOrganisationseinheit
03769 - Katzgraber, Helmut Gottfried (SNF-Professur)
ETH Bibliographie
yes
Altmetrics