1.
Phys Rev Lett
; 108(23): 230508, 2012 Jun 08.
Article
in English
| MEDLINE
| ID: mdl-23003935
ABSTRACT
The aim of this work is to study the physical properties of a one-way quantum computer in an effective low-energy cluster state. We calculate the optimal working conditions as a function of the temperature and of the system parameters. The central result of our work is that any effective cluster state implemented in a perturbative framework is fragile against special kinds of external perturbations. Qualitative aspects of our work are important for any implementation of effective low-energy models containing strong multisite interactions.