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Decoherence in Nearly-Isolated Quantum Dots

J. A. Folk·C. M. Marcus·J. S. Harris Jr
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Abstract

Decoherence in nearly-isolated GaAs quantum dots is investigated using the change in average Coulomb blockade peak height upon breaking time-reversal symmetry. The normalized change in average peak height approaches the predicted universal value of 1/4 at temperatures well below the single-particle level spacing, but is greatly suppressed for temperature greater than the level spacing, suggesting that inelastic scattering or other dephasing mechanisms dominate in this regime.

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J. A. Folk, C. M. Marcus, J. S. Harris Jr. 2001-06-08. Decoherence in Nearly-Isolated Quantum Dots. https://doi.org/10.1103/physrevlett.87.206802

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