Current fluctuation spectrum in dissipative solid-state qubits



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.


Perturbation Theory Strong Coupling Current Noise Current Fluctuation Couple Quantum 
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© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Departamento de Teoría de la Materia CondensadaInstituto de Ciencia de Materiales de Madrid, CSICCantoblanco, MadridSpain
  2. 2.Department of PhysicsUMISTManchesterUK

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