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Geometric phase of interacting qubits: Mean-field analysis

Source: Phys. Rev. A 80, 044303 (2009); doi:10.1103/PhysRevA.80.044303

Published 19 October 2009

KEYWORDS and PACS
Keywords
PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 03.67.-a
    Quantum information
  • 03.65.Vf
    Phases: geometric; dynamic or topological (quantum theory)
  • 03.65.Yz
    Decoherence; open systems; quantum statistical methods
  • YEAR: 2009
PUBLICATION DATA
Publisher:
AIP is a member of CrossRef APS
J. Dajka, M. Mierzejewski, and J. Luczka
Institute of Physics, University of Silesia, 40-007 Katowice, Poland
We consider a system consisting of a large number of interacting qubits and study the geometric phase of one of them. The many body interaction is analyzed within a mean-field approach when the reduced dynamics of a single qubit is described by a nonlinear Hartree equation. Generally, the geometric phase is highly sensitive to the type and the strength of interaction. However, we identify regimes where the geometric phase is almost independent of the qubit-qubit coupling. ©2009 The American Physical Society
History: Received 23 June 2009; published 19 October 2009
Permalink: http://link.aps.org/abstract/PRA/v80/e044303
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