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Decoherence in Nearly-Isolated Quantum Dots

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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.
OriginalsprogUdefineret/Ukendt
TidsskriftPhysical Review Letters
Vol/bind87
Udgave nummer20
Sider (fra-til)2066802
Antal sider4
ISSN0031-9007
DOI
StatusUdgivet - 3 aug. 2000

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