title: Suppression of quantum chaos in a quantum computer hardware.
abstract: We present numerical and analytical studies of a quantum computer proposed by the Yamamoto group in Phys. Rev. Lett. 89, 017901 (2002). The stable and quantum chaos regimes in the quantum computer hardware are identified as a function of magnetic field gradient and dipole-dipole couplings between qubits on a square lattice. It is shown that a strong magnetic field gradient leads to suppression of quantum chaos.
authors.affiliation: Laboratoire de Physique Théorique, UMR 5152 du CNRS, Université Paul Sabatier, 31062 Toulouse Cedex 4, France. jose.lages@univ-fcomte.fr
authors.forename: J
authors.initials: J
authors.lastname: Lages
authors.forename: D L
authors.initials: DL
authors.lastname: Shepelyansky