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Phys. Rev. E 74, 026208 (2006) [7 pages]

Suppression of quantum chaos in a quantum computer hardware

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J. Lages and D. L. Shepelyansky
Laboratoire de Physique Théorique, UMR 5152 du CNRS, Université Paul Sabatier, 31062 Toulouse Cedex 4, France

Received 17 October 2005; published 18 August 2006

Wepresent numerical and analytical studies of a quantum computer proposedby the Yamamoto group in Phys. Rev. Lett. 89, 017901(2002). The stable and quantum chaos regimes in the quantumcomputer hardware are identified as a function of magnetic fieldgradient and dipole-dipole couplings between qubits on a square lattice.It is shown that a strong magnetic field gradient leadsto suppression of quantum chaos.

©2006 The American Physical Society

URL:	http://link.aps.org/doi/10.1103/PhysRevE.74.026208
DOI:	10.1103/PhysRevE.74.026208
PACS:	05.45.Mt; 03.67.Lx; 24.10.Cn 05.45.Mt Semiclassical methods in quantum chaos 03.67.Lx Quantum computation 24.10.Cn Many-body theory of nuclei YEAR: 2006
KEYWORDS:	chaos, quantum computing, dipole coupling, magnetic fields

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