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Current fluctuation spectrum in dissipative solid-state qubits

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Abstract.

We present a formalism to calculate frequency dependent electron current noise for transport through two-level systems (such as coupled quantum dots or Cooper-pair boxes) in presence of dissipation. Perturbation theories in various regimes are formulated within a matrix scheme in Laplace scheme which we evaluate in detail both for weak and strong coupling to a bosonic environment.

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Author information

Authors and Affiliations

  1. Departamento de Teoría de la Materia Condensada, Instituto de Ciencia de Materiales de Madrid, CSIC, 28049, Cantoblanco, Madrid, Spain

    R. Aguado

  2. Department of Physics, UMIST, P.O. Box 88, M60 1QD, Manchester, UK

    T. Brandes

Authors
  1. R. Aguado
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  2. T. Brandes
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Corresponding author

Correspondence to T. Brandes.

Additional information

Received: 12 December 2003, Published online: 10 August 2004

PACS:

72.70. + m Noise processes and phenomena - 73.23.Hk Coulomb blockade; single-electron tunneling

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Aguado, R., Brandes, T. Current fluctuation spectrum in dissipative solid-state qubits. Eur. Phys. J. B 40, 357–363 (2004). https://doi.org/10.1140/epjb/e2004-00247-1

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  • DOI: https://doi.org/10.1140/epjb/e2004-00247-1

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